Рубрика: Green House Seeds

Green House Seeds, vibrant merch for cannabis culture enthusiasts, is renowned for funny and bright designed stickers that let fans showcase their love for the brand. These stickers are perfect for decorating almost everything: laptops, water bottles, bikes, suitcases, grow rooms. They blend minimalist design with iconic cannabis motifs like leaves, strain logos, and slogans such as «Strain Hunters.»

Designs and Variety

The official Green House Seeds online store features a «Merchandise > Stickers» section with sticker packs.   While the section may occasionally be out of stock as of October 2025 likely due to updates, typical offerings include:

— Brand Logos: the classic green house emblem with cannabis leaves or bold white «Green House Seed Co.» text on a black background.

— Strains and Characters: stickers featuring popular strains like White Widow, Super Lemon Haze, or Arjan’s Haze, often styled after the Strain Hunters project (Roskam’s quest for rare genetics).

— Collector Packs: sets of 5–10 waterproof vinyl stickers, ranging from 5×5 cm to 10×10 cm. Prices typically range from €5–15 per pack, depending on size.

Stickers are often bundled with other accessories like grinders, lighters, or rolling papers.  Fans praise their durability—fade-resistant and long-lasting, they’re ideal for cannabis culture decor.

Where to Buy and Popularity

— Official Store: The primary source is the Green House Seeds website, with worldwide shipping ). 

— Partners: Retailers like Seedsman, House of Seeds, or Tiger One sell Green House merch alongside seeds.   

— Alternatives: Platforms like Redbubble or Etsy offer fan-made designs, from custom «Greenhouse Academy» stickers to botanical cannabis art.  On social media (Reddit, X), enthusiasts share photos of stickers adorning hydroponic setups or personal collections. 

The Green House Seeds community values the merch for its authenticity, representing a brand that champions legalization and innovation in cannabis cultivation. Collectors should watch for limited-edition releases, such as collabs like Patta x GH. Affordable and iconic, these stickers are a must-have for growers and fans. 

Dark Phoenix  

Design: A striking red phoenix with outstretched wings dominates the center, surrounded by fiery accents on a dark burgundy background. The Green House Seed Co. logo and «Since 1985» text reinforce the brand identity.  

Theme: Represents rebirth and strength, possibly hinting at a potent strain or its impact.  

Aesthetic: Vibrant red and orange hues create a bold, memorable look, appealing to adventurous collectors.  

The Church  

Design: Features a cannabis leaf with a cross and a stylized brain crowned with a leafy wreath, set against a white background with red details. The «The Church» text has a gothic flair.  

Theme: Suggests a revered status for cannabis, perhaps alluding to a spiritual experience from the strain.  

Aesthetic: The white-and-red contrast offers a clean yet intriguing style, ideal for those who appreciate symbolism.  

White Widow  

 Design: A spider in a web hovers over a green cannabis leaf on a black background, framed by the logo and «Since 1985» text.  

Theme: References the famous White Widow strain, with the spider symbolizing its power and mystery.  

 Aesthetic: The dark palette with vivid green accents delivers a sleek, minimalist vibe, perfect for thematic decor.  

Wonderpie  

 

Design: A superhero-style woman holding a pie stands out on a blue background accented with red and yellow details. The «Wonderpie» text pops vividly.  

Theme: A playful twist on «Wonder Woman» and «pie,» possibly indicating the strain’s flavor or effect.  

Aesthetic: Bright and cheerful with a pop-art feel, designed to catch the eye.  

Exodus Cheese  

Design: A cartoon mouse with a cheese wedge and Egyptian pyramids adorns a light green background. The «Exodus Cheese» text shines in bold colors.  

Theme: Ties to the Exodus Cheese strain with a humorous Egyptian twist, perhaps nodding to its ancient origins.  

Aesthetic: Lighthearted and playful with warm tones, fitting for a relaxed setting.  

Bubba Slush  

Design: An abstract image featuring drips and a mouth on a pink background with red accents. The «Bubba Slush» text stands out sharply.  

Theme: Might reflect a refreshing or sticky strain effect, emphasizing texture.  

Aesthetic: Unusual and daring, its originality draws attention.  

Kong’s Krush  

   Design: A gorilla holding a cigarette is depicted on a green background with plant motifs. The «Kong’s Krush» text is rendered in a bold style.  

   Theme: The gorilla’s powerful image symbolizes the strain’s strength, hinting at a strong effect.  

   Aesthetic: Deep green tones with black accents offer a rugged yet stylish appearance.  

King’s Juice  

   Design: A rockabilly skeleton with a milkshake and retro car graces a blue background. The «King’s Juice» text glows in neon pink.  

   Theme: A retro vibe with a «juice» reference, possibly alluding to the strain’s taste or potency.  

   Aesthetic: Bright and nostalgic, perfect for fans of vintage aesthetics.  

Cloud Walker  

   Design: A cartoon character with a staff floats among clouds on a purple-pink background. The «Cloud Walker» text is in red.  

   Theme: Evokes a cloud-traveling figure, possibly linked to the strain’s lightness or psychedelic qualities.  

   Aesthetic: Soft pastel shades with a playful style, appealing to a broad audience.  

Sweet Mango Auto

Design: A grinning mango in a sombrero lounges under palm trees with a fiery sunset, with «Sweet Mango Auto» in gooey orange-green letters, encircled by Amsterdam branding and «Since 1985».

Theme: Captures tropical sweetness and auto-flowering ease, hinting at a juicy, hassle-free strain.

Aesthetic: Bright and sunny with a tropical twist, appealing to fruit lovers and casual users.

Banana Krumble

Design: A chill banana character lounges with red-rimmed eyes, surrounded by peels on a starry blue background, with «Banana Krumble» in melty yellow-orange and Green House details around the edge.

Theme: Suggests a relaxing, crumbly indica experience with a stoner humor twist.

Aesthetic: Laid-back and quirky with deep tones, attracting laid-back enthusiasts.

Big Bang

Design: A gray alien puffs a joint and holds a «MK X» spray can, with UFOs and stars on a black cosmic background, «Big Bang» in jagged white, circled by Amsterdam and «Since 1985».

Theme: Represents a universe-shattering high, ideal for a potent, mind-blowing strain.

Aesthetic: Out-of-this-world and bold, drawing in space-loving smokers.

Holy Snow

Design: A tiki god surfs a snowy wave with a shaka sign, amid palm trees and icy peaks on a blue beachy backdrop, «Holy Snow» in fiery orange, with Green House branding around.

Theme: Blends tropical heat with snowy sativa power, hinting at a divine, energetic strain.

Aesthetic: Vibrant and adventurous, appealing to surf and snow enthusiasts alike.

Chemical Bride

Design: A seductive woman with pink flaming hair and a rose crown sticks out her tongue on a toxic green background, «Chemical Bride» in dripping purple, encircled by «Since 1985» and Amsterdam details.

Theme: Suggests a potent, gothic chemical romance, perfect for a strong, unique strain.

Aesthetic: Edgy and captivating with dark tones, attracting bold collectors.

Chemdog

Design: A green funny goblin-dog with one eye winks and sticks out its tongue on a purple leopard-print background with hearts, «Chemdog» in pink graffiti, circled by Amsterdam and «Since 1985 xxx».

Theme: Embodies the legendary chem strain with a wild, rebellious energy.

Aesthetic: Freaky and fun with vibrant colors, appealing to chem strain fans.

Hawaiian Snow

Design: A snow-capped tiki idol smokes a rainbow joint on a navy night sky with a cannabis leaf, «Hawaiian Snow» in white with a fiery trail, encircled by «Established in 1985»

Theme: Combines Hawaiian fury with snowy sativa strength, hinting at an intense experience.

Aesthetic: Intense yet inviting with tropical and starry vibes, perfect for adventurers.

Flowerbomb Kush

Design: A massive yellow mushroom cloud erupts over a skyline of classic Amsterdam buildings, with «Flowerbomb Kush» exploding in vibrant red and green graffiti-style letters. The Green House Seed Co. logo and «Since 1985» circle the edge, adding a touch of heritage to this explosive scene.

Aesthetic: Bold and intense with a dark, smoky vibe, blending urban chaos with cannabis potency—perfect for fans of powerful strains and gritty art.

Jack’s Dream

Design: A suave, bearded Jack Herer figure in a fedora holds a joint, surrounded by swirling smoke and leafy accents on a sleek black background. «Jack’s Dream» stands out in bold white letters, with «Since 1985» and Green House branding encircling the edge.

Aesthetic: Sophisticated yet trippy with a noir-inspired coolness, appealing to those who savor a smooth, dreamy high with a touch of class.

Spannabis 2024

Design: A stylized cannabis leaf with a watchful eye at its center anchors a black backdrop, surrounded by golden leaves and the text «Spannabis 2024 Fería Cannabis Barcelona» in green and yellow. Green House branding and websites circle the edge.

Aesthetic: Sleek and modern with a mystical, all-seeing vibe, perfect for cannabis event enthusiasts and collectors marking the 2024 Barcelona fest.

Lost Pearl

Design: A mystical mermaid with flowing blue hair reaches for a glowing pearl under a moonlit ocean, surrounded by jellyfish and waves. «Lost Pearl» shimmers in white, with «Since 1985» and Green House details framing the underwater scene.

Aesthetic: Ethereal and enchanting with deep blue tones, ideal for those drawn to rare, oceanic-inspired strains and dreamy aesthetics.

Feeding+

Design: A bold QR code sits center stage with «Feeding+ Scan for our Feeding Catalogue» in yellow, set against a colorful, abstract background with award-winning plant feeding laurels. Green House Feeding branding circles the edge.

Aesthetic: Practical yet vibrant, blending tech-savvy utility with a grower’s pride, appealing to cultivators seeking top-tier feeding tips.

General Observations  

All stickers use vinyl, ensuring water resistance and longevity.  Approximately 7-10 cm in diameter, great for decorating laptops, bottles, or grow equipment.  Each sticker connects to a specific strain, featuring «Green House Seed Co.» and «Since 1985» to highlight the brand’s heritage.  

Target Audience: Growers, collectors, and cannabis enthusiasts will enjoy the variety, from cartoonish to gothic and retro styles.  These stickers beautifully capture the essence of Green House Seeds, blending creativity with a strong tie to their products. 

Green House Seeds has long expanded its brand beyond seeds, releasing an extensive line of merch. The first examples appeared in the 1990s and 2000s, when the company was gaining popularity thanks to coffee shops and the High Times Cannabis Cup, but a full-fledged collection took shape in the 2010s with the Strain Hunters project.

Over the years, the team has released dozens of items, focusing on clothing, smoking accessories, and limited collaborations. The merch highlights the brand’s beauty: logos featuring weed leaves, slogans like «Creators of Champions» (a reference to cup victories), and the theme of Strain Hunters’ travels.

Many items are limited edition, and some older designs were only released once. Prices range from €2-3 for small accessories to €80-100 for premium clothing. While this isn’t exactly cheap, discounts of up to 15-20% are common. Sales are conducted through the official website shop.greenhouseseeds.nl and resellers like Attitude Seedbank. There are no exact figures on the number of souvenirs, but the catalogs show around 50-60 unique designs over the years.

Clothing

• Originals T-Shirts: Basic T-shirts with the «Green House Seeds Co.» logo front and back. Design: Classic script font in gold or white on a black or white background; sometimes with leaves. Material: Cotton. Price: €19.50–€24.50. Standard, available since the 2000s; color variations: black, white, gray.
• Female T-Shirts: Women’s versions of the originals, fitted cut with a V-neck. Design: Similar to men’s, but with feminine prints: flowers, haze motifs. Price: €19.50–€24.50. In the catalog since the 2010s; limited edition for specific strains.

• Creators of Champions T-Shirts: A series with the «Creators of Champions» slogan and trophies. Visual: gold text, cannabis leaves. Colors: black, blue, gray. Price: €24.50–€32.50. The series was launched around 2015; has been reissued many times.
• • Limited Edition T-Shirts: Limited designs, often featuring cannabis strains or national motifs. Visual: graphics with cars and leaves. Colors: light blue/black. Price: €32.50. Produced in batches; archived models can be purchased on eBay for €20–€40.

• Hoodies Originals/Special Edition: Hoodies with a logo on the back and chest. Visual: black with gold «Green House Amsterdam» script; cannabis patterns. Price: €49–€85. Since the 2000s; cannabis versions are limited, gray-purple variations.
• Creators of Champions Hoodies: Hoodies from the champions series, with a large print. Visual: gray-purple gradient, «Champions» text. Price: €65–€85
• Limited Edition Camo Hoodies: Camouflage hoodies. Visual: green and gray mix with logo. Price: €75–€85. Older patterns are marked down to €50–€70.
  Headwear
• 6-Panel Hats/Snapbacks: Six types of caps with adjustable closures and logo. Price: €35
• Bucket Hats: Panama hats. Visual: green, black, and blue with logo. Price: €35

Collaborations

• Patta x GH T-Shirts/Hoodies: collab with Patta (streetwear). Visual: «The World’s Leading High since 1985» in gold; black/purple, pocket logo. Price: T-shirts €32.50–€60, Hoodies €85. Launched in 2022; sets cost €50–€100.
• Propaganda x GH T-Shirts: collab with Propaganda. Visual: gradient design with cannabis and a snake; purple/pink on black. Price: €49.
  Accessories and souvenirs
• Rolling Papers (Strain Hunters): rolling papers. Price: €3. Since the 2010s; Various colors, but more expensive, €5 each.
• Ultra Thin Cones — King Size: Smoking cones. White or clear joints with branding. Price: €2.50.
• Grinders (Strain Hunters): Weed grinders. Metal with logo or plastic. Price: €15–25. Limited editions and archival releases are sold on eBay for €10–20.

• Lighters. Plastic with logo or strain prints. Price: €5–10.
• DVDs (Documentaries/Grow Sessions): Videos of Strain Hunters expeditions. Covers with Arjan Roskam in the jungle. Price: €10–20.
• Value Packs: sets: t-shirt + hat + accessory. Branded set. Price: €50–80. A great gift for fans; includes stickers for older versions.
• Stickers: Souvenir stickers with logos and brands. Vinyl, round and rectangular, price: €1–€5.

Green House Seeds Medical is the medical division of Green House Seeds. In the early 2000s, the company expanded into the medical field through the GH Medical division and related projects, such as Green House DRC in the Democratic Republic of the Congo (DRC). The medical division’s goal is to normalize cannabis for recreational and medical use, which ultimately contributed to its legalization in many countries, including 19 US states, Uruguay, and decriminalization in Europe.

GH Medical, founded by Arjan Roskam, focuses on the medical use of cannabis. The company collaborates with universities and clinics to develop cannabinoid-based medicines. In 2018, the GH Medical Congo Project was launched to produce medicines in the Democratic Republic of the Congo. By 2025, Green House had expanded to Thailand, Canada, and other regions, adapting genetics for large-scale production, including for medical purposes.

Green House Medical’s research focuses on genetics and cannabinoids. Through Strain Hunters, they have cataloged hundreds of strains, analyzing their active compounds (cannabinoids, terpenes) for treatment. In collaboration with GH Medical, Dutch doctors are identifying combinations for specific diseases, such as malaria, AIDS, respiratory infections, and diarrhea. In the Congo, GH Medical is researching local landraces and experimenting with them to produce low-cost medications. The company is also developing high-CBD strains for medical use, available in pharmacies, such as in the UK through MedBud.

Green House Seeds produces seeds for medical cannabis, but through GH Medical and Green House DRC, this production is directly translated into full-fledged medications. In the Democratic Republic of the Congo, they are developing cannabinoid medications based on local varieties that are inexpensive to grow and low-tech. The project includes clinical trials in collaboration with universities in Kinshasa and hospitals in the country. In other regions, such as Thailand and Canada, they produce oils, extracts, and products for the medical market. Arjan emphasizes that they produce medicines for people in places where the government fails.

Green House DRC is a key project in the Democratic Republic of Congo, launched in 2018. Arjan’s team owns plantations for growing local landrace cannabis and trains farmers and medical workers. They collaborate with the DRC’s ministries of agriculture, education, and health, as well as the University of Kinshasa. In 2020, the Congolese factory fed 250 families and 700 children, focusing on sustainable production. The plantations are used to preserve genetics and produce raw materials for medicines. Strain Hunters began with expeditions to Congo in the 2010s to search for cannabis varieties, which led to the establishment of the plantations.

In addition, Green House Medical has participated in a joint project with cannabis industry giant Canopy Growth Corporation and Organa Brands, known for its brands like O.penVAPE. This is a three-pronged partnership, rather than separate projects with each company. It focuses on the production and distribution of cannabis products, including medical ones, using Green House genetics and Organa Brands’ extraction technologies. The project is being implemented through a joint venture (JV) with Agripharm Corp., a licensed cannabis producer in Canada. The JV agreement was signed in November 2017, following the legalization of cannabis in Canada, where the recreational market opened in 2018. Previously, Agripharm was a wholly owned subsidiary of Canopy Growth, but under the JV, Canopy’s stake was reduced to 40%, Green House received 40%, and Organa Brands 20%.

The primary market is Canada (medical and recreational cannabis). JV also plans to expand into international markets: Germany, the UK, Australia… Green House and Organa products are distributed exclusively through Canopy in Canada, through Canopy’s online platforms (Tweed Main Street for medical cannabis), provincial retail chains, and wholesale to other licensed producers. In international markets, they are distributed through partners and pharmacies, such as Tweed in Germany.

Currently, there is no information on JV’s current revenue for 2025, but the project is considered a successful entry for Green House and Organa into the Canadian market, with potential for global growth. JV remains active, furthering Green House Medical’s global influence in cannabinoid medicine, although its focus has shifted to other Canopy initiatives after the 2020s.

In short, GH Medical continues to expand, and their overall commitment to medical cannabis—from genetics to local production—makes Green House Seeds a pioneer in the industry.

Green House Feeding fertilizers are designed for cannabis cultivation and are focused on ease of use, high concentration, and effectiveness. An important part of the company’s ecosystem, they were developed with a focus on mineral and organic formulas to simplify the growing process without sacrificing quality.

Green House Feeding fertilizers are available in powder form, making them easy to store, transport, and use, and offering a longer shelf life than liquid fertilizers. The main ingredients are sourced from Germany and Switzerland, where high quality standards are maintained.

Green House Feeding offers a range of high-quality fertilizers designed for various plants, including cannabis, tomatoes, and vegetables. Developed by Green House Seeds, these products cater to both mineral and organic growing methods, ensuring robust plant development across all growth stages. This guide explores the Mineral Line and Organic Line (Bio Feeding), detailing their composition, applications, benefits, and considerations for growers. Whether you’re a beginner or an experienced cultivator, these fertilizers simplify nutrition while maximizing yield and quality.

Mineral Line: All-in-One Nutrient Solutions

The Mineral Line by Green House Feeding provides complete, water-soluble nutrient formulas containing essential macro- and micro-elements, such as nitrogen (N), phosphorus (P), potassium (K), magnesium, calcium, and sulfur. These products are ideal for hydroponics, coco coir, and soil, delivering fast nutrient uptake. For optimal results, maintain a pH of 5.8–6.2 in hydroponic systems and monitor electrical conductivity (EC) to prevent nutrient buildup. Since these formulas lack calcium, growers using soft water (e.g., reverse osmosis or rainwater) should add a calcium supplement. Alternate with plain water to avoid salt accumulation.

Grow

Composition: NPK 24-6-12, high in nitrogen, with magnesium, sulfur, and micro-elements (e.g., iron, manganese).
Purpose: Designed for the vegetative stage, supporting leaf and stem growth, mother plants, and healthy cuttings. Suitable for all plant types, it promotes continuous growth and strong roots.
Application: Use 0.5 g/L for seedlings and 0.8–1 g/L for mature plants. In soil, apply 5–7 g per 10 liters; in hydroponics, combine with calcium (1.13 g/gallon for rockwool). Continue for 1–2 weeks into early flowering. For foliar spraying, dilute further.
Benefits: Encourages rapid green mass development and prevents nitrogen deficiency (yellowing leaves, stunted growth). Cost-effective, covering the entire vegetative phase with one product.
Considerations: Avoid overuse during flowering to prevent excessive stretching. Reduce dosage in hard water to prevent nutrient lockout.

Hybrid

Composition: NPK 15-7-22, balanced with reduced ammonium nitrogen and increased magnesium, plus sulfates for essential oils.
Purpose: Tailored for hybrid varieties (50/50 indica/sativa) with an 8–9-week flowering period, supporting both growth and bloom in hydroponics.
Application: Apply 0.7–1 g/L during flowering and 0.5 g/L for seedlings. Combine with Booster (0.56 g/gallon Hybrid + 0.28 g/gallon Booster) and increase dosage weekly.
Benefits: Enhances terpene, flavonoid, and essential oil production, improving flavor and aroma. Ideal for coco and rockwool, reducing magnesium deficiency risks.
Considerations: Not suitable for pure sativas due to their longer cycles. Monitor EC (1.5–2.0 mS/cm) to avoid overfeeding.

Short Flowering and Fast Flowering

Composition: NPK 12-14-24, rich in potassium with phosphorus and micro-elements for root development.
Purpose: Formulated for short-flowering hybrids (indica, autoflowers, <8 weeks), ensuring dense buds and uniform ripening.
Application: Use 0.5–0.7 g/L in vegetative stages and 0.7–1 g/L in flowering, adding Booster (0.2–0.5 g/L). For autoflowers, use throughout the cycle. In soil, apply 7–10 g per 10 liters.
Benefits: Boosts yield and prevents potassium deficiency (uneven ripening, weak stems). Simplifies feeding for autoflowers with a single product.
Considerations: Add calcium for soft water. Flush 1–2 weeks before harvest to remove excess salts.

Long Flowering

Composition: NPK 18-12-18, balanced with high phosphorus for roots and nitrogen for extended flowering.
Purpose: Suited for long-flowering sativas (>9–10 weeks), maintaining nitrogen levels and supporting robust root systems.
Application: Use 0.6–1 g/L, increasing to 1 g/L during flowering. In hydroponics, combine with Booster late in the cycle.
Benefits: Prevents weakening during late flowering and strengthens roots for larger plants.
Considerations: Avoid for short cycles due to excess nitrogen. Monitor pH in hydroponic setups.

Booster

Composition: NPK 0-30-27, a phosphorus-potassium (PK) booster with magnesium, no nitrogen.
Purpose: Enhances flowering by increasing yield, bud density, and resin production.
Application: Add 0.2–0.5 g/L mid-flowering (3–7 g per 10 liters with base nutrients). Avoid during vegetative growth.
Benefits: Boosts yield by 20–30% and accelerates flowering.
Considerations: Overuse can cause toxicity. Use only with base formulas like Hybrid or Short Flowering.

Calcium

Composition: NPK 6-0-0, chelated calcium.
Purpose: Prevents calcium deficiency (blossom-end rot, weak leaves) in soft water setups.
Application: Add 0.1–0.2 g/L with Mineral Line nutrients. In hydroponics, use 0.17 g/gallon.
Benefits: Stabilizes pH and strengthens cell walls for healthier plants.
Considerations: Avoid mixing with other CalMag products to prevent reactions. Use only with soft water.

Organic Line (Bio Feeding): Natural Nutrition for Soil

The Organic Line, or Bio Feeding, is 100% organic, designed for soil and coco coir. These fertilizers combine natural ingredients (bone meal, horn, seaweed) to stimulate soil microbiology, including beneficial fungi and bacteria. Nutrients release gradually over 8 weeks, enhancing flavor and aroma. Not suitable for hydroponics. Maintain soil pH between 6.0–7.0 for best results.

BioGrow

Composition: NPK 7-2-4, organic nitrogen from bone meal and horn, with micro-elements.
Purpose: Supports vegetative growth, promoting strong roots, leaves, and soil microbiota for rapid development.
Application: Mix 2–3 g/L of substrate at planting. For mother plants, apply as top-dressing every 2 months. Use half the dose for seedlings.
Benefits: Builds healthy roots, increases disease resistance, and delivers organic flavor.
Considerations: Reduce dosage in pre-fertilized substrates. Nutrient release takes 8 weeks.

BioBloom

Composition: NPK 4-9-9, organic phosphorus and potassium from bone meal and winery pomace, with 18% organic carbon, 8% CaO, and 4% MgO.
Purpose: Enhances flowering, boosting yield, flavor, and aroma while supporting soil microbiology.
Application: Mix 2–3 g/L of substrate before flowering, with top-dressing mid-cycle. Ideal for 8-week flowering periods.
Benefits: Provides natural phosphorus and potassium release, forms humus, and increases resin and terpene production.
Considerations: Effectiveness depends on soil microbes, requiring proper temperature and moisture. Certified for organic cultivation.

BioEnhancer

Composition: Blend of humic acids, seaweed extracts, Trichoderma harzianum, and Bacillus subtilis.
Purpose: Improves nutrient uptake, protects roots, and boosts growth throughout the plant cycle.
Application: Use 0.5–1 g/L of water every 2 weeks for root or foliar feeding. For cuttings/seeds, apply 1 g/L. Use within 24 hours of mixing.
Benefits: Enhances microbiota, increases pathogen resistance, and improves yield. Versatile for roots, leaves, and soil.
Considerations: Do not store mixed solutions, as bacteria lose activity. Pairs well with BioGrow and BioBloom.

Starter Kits and Supplements

Bio Starter Kit: Includes BioEnhancer (125 g), BioGrow (500 g), and BioBloom (500 g), sufficient for 100–150 liters of substrate across multiple cycles. Ideal for beginners, mix with soil for a complete organic cycle. Includes a catalog and bottle. Offers cost savings, simplicity, and organic certification.
BioRoot Protector: A microbial supplement (Trichoderma, Bacillus) for protection against root pathogens like fungi and bacteria. Apply during early stages via irrigation or substrate for root rot prevention. Strengthens plant immunity and complements the Bio Line.

Why Choose Green House Feeding?

Green House Feeding fertilizers are globally trusted, available in growshops and through online retailers with fast worldwide shipping. Popular among growers, they earn 4–5 star ratings on platforms like GrowDiaries and THCFarmer for ease of use and reliable results. Suitable for cannabis and other crops, these products emphasize eco-friendliness (Organic Line) and simplicity («Keep it Simple!»). The brand offers a nutrient calculator on its website for tailored feeding schedules. Beginners should start with half doses to avoid overfeeding, and growers using hard water must monitor EC to prevent nutrient lockout.

For hydroponic setups, choose the Mineral Line for fast nutrient delivery. For organic soil growing, opt for the Bio Feeding Line to enhance flavor and sustainability. Always test on a small scale before full application to ensure compatibility with your setup.

Over the course of its existence, Green House Seeds has printed literally several trainloads of catalogs of all sizes and formats in at least a dozen languages. Green House Seed Co. catalogs represent a whole layer of cannabis culture. They showcase thoughtful design, high-quality materials, and professional presentation. Even in the office, we’ve probably lost count of the number of copies printed, so we’ll simply provide photos of just a few.

Catalog Design.

The covers feature bright, eye-catching close-up images of plants, making them easy to read even after consuming Green House Seeds products. A contrasting color palette is used: a dark background with gold and white accents for logos and text («Green House Seed Co.», «Creators of Champions»), creating a premium look.

Branding elements, such as logos and catchy slogans like «World’s Leading Cannabis Seed Company,» are featured throughout the brochure, ensuring recognition. The presence of QR codes adds a modern, interactive element and facilitates navigation to the website.

Paper and Format.

All catalogs, with rare exceptions, use expensive, high-quality glossy paper, which protects against wear and enhances the vibrancy of the images. The texture and sheen of the photos suggest a thicker material, typical of premium catalogs. The A5 format is very compact and convenient for storing and reading; everything has been thoughtfully designed!

The catalogs are neatly designed, with clear typography and text alignment, indicating a highly professional layout and printing. The multilingual approach indicates a focus on an international audience. Importantly, the year of publication and special editions, such as «USA Strains Releases,» create a sense of collectible value and relevance.

Merchandising Catalog.

In 2019, a separate catalog exclusively devoted to merchandising was printed, an absolute novelty for the cannabis business at that time. Collected here are caps, T-shirts, hoodies, rolling papers, grinders, and all the other trinkets that delight fans and are the pride of collectors. A closer look reveals that Green House Seeds produces so much branded clothing that you could dress yourself from head to toe. The catalog is 16 pages densely packed with product photos.

Fold-out catalog

In 2014, a pocket-sized, folding catalog was printed. Despite its size when folded, it can cover a medium-sized table when unfolded. It was timed to coincide with the launch of a marijuana growing website featuring HD videos, a completely new feature at the time. The catalog itself not only listed all the seed varieties available for purchase but also included a «flavor wheel,» a signature Green House Seeds feature that helps navigate the diverse selection.

Overall, the abundance, style, and design of the catalogs underscores the company’s status as a leader in its niche, combining aesthetics and functionality.

The history of Green House Seeds coffeeshops began in 1992, when Arjan Roskam, known as the «Cannabis King,» opened the first coffeeshop, The Green House, at Tolstraat 91 in Amsterdam-South. This was shortly after Roskam began experimenting with exotic cannabis strains from trips to Thailand, Nepal, and other countries and earned his first income.

The coffeeshop quickly became popular thanks to its high-quality product and unique atmosphere—it even served alcohol, a rarity for such establishments.

The success of the first coffeeshop was reinforced by victories at the prestigious High Times Cannabis Cup: in 1993, Green House won the overall category, and in 1994, it won in almost every category. This attracted international press attention, including High Times, which featured Arjan on its cover in 1995, and celebrity attention, which contributed to the chain’s expansion.

Today, Green House has four coffeeshops and two clubs in Amsterdam, including its flagship on the Tolstraat, as well as other locations such as Green House on the canal near the Red Quarter and Greenhouse United.

The coffeeshops and Green House itself were originally founded by Roskam in partnership with other prominent figures in the cannabis industry, including Nevil Schoenmakers, an Australian breeder and founder of the first cannabis seed bank, The Seed Bank. Schoenmakers co-founded and helped manage the coffeeshops, contributing to the development of strains such as Super Silver Haze, which won Cannabis Cup victories.

In 1998, Shanti-Baba (Scott Blakey), another co-founder of the company, sold his stake to Roskam, allowing him to become the sole owner of Green House Seed Company. Similarly, around 1999–2000, Schoenmakers sold his stake in one of the coffee shops to Roskam. According to industry insiders, serious disagreements arose between Schoenmakers and Roskam, including conflicts over management and genetics. These conflicts escalated into a desire to split the business.

The split took about two years, and after Schoenmakers’ departure, the quality of Green House products, according to some critics, declined—the company was even disqualified from the Cannabis Cup for attempting to bribe the jury.

Currently, Roskam remains the chain’s majority owner, but he has partners such as Joachim «Joa» Helms, co-owner of the legendary Green House coffee shop and a cannabis activist.

In 2016–2017, Green House Seed Company entered into partnerships with American brands (such as O.penVAPE and Canopy Growth), but these were for products, not coffee shops.

The Green House chain remains one of the most influential in Amsterdam, despite tightened regulations for coffee shops.

Green House Seed Company has been actively expanding its presence in Thailand since 2023, following the legalization of medical cannabis in the country.

Most important goals.

The company’s primary focus is on the cultivation and export of medical cannabis through its subsidiary, Green House Medical (in partnership with Green House Energrow, founded in 2023). It is one of the largest licensed cannabis companies in the world, compliant with local regulations (GACP certification for the EU and Thailand).

The business combines cultivation with retail sales through dispensaries, but faces challenges due to recent legislative changes. The partial ban on recreational use in 2025 negatively impacted the market, causing a loss of approximately $1 billion. Below are key details based on available data as of October 2025.

Greenhouse complex.

The company’s main greenhouse complex is located in the Phathum Thani district, northern Bangkok. It combines open fields, greenhouses with polycarbonate structures, insect screens, and ventilation, and warehouses. The grow zone contains 20-25 greenhouses with Agrowtek GCX Plus monitoring systems for climate control, irrigation, and HPS lighting. This allows for year-round production.

As for the growing facilities themselves, they cultivate medical cannabis with an emphasis on landrace phenotypes. The genetics are adapted to Thailand’s tropical climate, using soil and coco substrates. Specific strains are not publicly announced, but the emphasis is on high-quality varieties for export and domestic consumption.

Coffeeshop in Bankkok.

Harvests are sold in Thailand in Bangkok at 46/202 Nuanchan Road, Bueng Kum. This is «Bangkok X Amsterdam»—Green House’s first official location in Asia, opening in 2023-2024. The construction of several additional dispensaries across the country is planned, with completion scheduled for 2025. Naturally, they are focused on medical cannabis.

Bangkok X Amsterdam Coffeeshop: A Comprehensive Guide.

**Bangkok X Amsterdam** is a cannabis café and dispensary blending the laid-back vibe of Amsterdam’s iconic coffeeshops with the warm hospitality of Thailand.  This venue markets itself as a cultural bridge between Bangkok and Amsterdam. Catering to both tourists and locals, it offers not just premium cannabis but also food, drinks, and a chill atmosphere filled with vibrant visitors and friendly staff.  

Background and Location.

Launched in early 2022, shortly after Thailand decriminalized cannabis, Bangkok X Amsterdam is situated at 46/202 Nuanchan Rd., Buengkum. Spanning roughly 200 square meters, the venue operates across two floors: the ground level houses a dispensary and bakery, while the fifth floor features a lounge with a bar, an additional dispensary, and a rooftop smoking terrace. The design fuses Scandinavian minimalism with retro flair—think rich wood, sleek lines, kitschy touches, and a glass elevator. The interior, including vintage furniture and decor, doubles as an art gallery with everything up for sale. The vibe is relaxed, security is discreet, and the space embodies the Thai concept of *sanook* (fun and ease).  

Product Range and Offerings

Primarily a cannabis dispensary, Bangkok X Amsterdam specializes in buds, stocking over 90 strains. Initially focused on imported varieties, it now highlights potent, locally grown Thai strains. Popular picks include Super Lemon Haze, Pablo Lemon, Jack Herer, Amnesia Haze, Orange Bud, Thai Green Crack, Cartel Bruce, Blue Dream, CBN Critical, Jungle Cake, Pineapple Express, Thai Stick, OG Kush, Sour Diesel, and Skywalker. Prices range from 99 baht (~3 USD) per gram for budget options to 300–700+ baht for premium selections. The shop also sells pre-rolled joints, rolling papers, filters, grinders, and rolling trays from top brands like Cookies, Mary Jane’s, RAW, and Trip. Customers can touch and smell the buds before buying.  

Food and Drink Menu

The menu blends cannabis-infused offerings with everyday fare at wallet-friendly prices. Food options include steaks, grilled meats, chicken, burgers, sandwiches, and more. Drinks range from various beers (like San Miguel Light) to spirits, cannabis-infused teas, and fruit extracts. The in-house bakery serves cannabis-infused brownies and other sweets, both potent and non-infused. Cannabis delivery is available until 5 AM via Instagram (@amsterdamcafebangkok11), with a 10% discount using the code AMSTERDAM10.  

Staff and Team

The venue employs around 14 staff members, including bartenders and budtenders (cannabis consultants). Budtenders, such as 26-year-old Tae Sitthichai and 22-year-old Lem, are trained by the owner and are known for their expertise and approachable demeanor. They guide customers based on mood and budget without being pushy. The bar is staffed by friendly, smiling women who enhance the welcoming vibe.  

Visitors and Foot Traffic

The café buzzes with energy, drawing a diverse international crowd. While exact visitor numbers aren’t available, its popularity is evident. Open from 8 AM to 4–5 AM (closed only 4–8 AM), it’s a hotspot for late-night hangouts. It holds a strong 4.7/5 rating on Google, with patrons raving about the rooftop and ambiance.  

Notable Visitors

Specific celebrity names aren’t documented in available sources. However, given its ties to Green House Seeds’ Amsterdam coffeeshops—frequented by stars like Rihanna and Snoop Dogg—and its appeal to tourists, it’s likely a magnet for prominent figures in the cannabis scene.

Green House Seeds Team

The main cultivation facility employs about a hundred people. Most are local specialists, new to cannabis at the start, who have gained experience in identifying plant problems and managing crops over a couple of years of operation. The staff includes agronomists, technicians, and managers. Exact figures are not disclosed, but the total headcount for Thailand is 100-150 people, including coffee shop staff.

The financials.

The financials of Green House Seeds Company’s Thai branch are not publicly available, but the company’s total annual revenue is expected to be approximately $3 million in 2025. It is estimated that the Thai business generates approximately 20% of this figure. The cannabis market in Thailand was worth 28 billion Thai baht (~$800 million) in 2024, projected to double by the end of 2025. However, the recriminalization of recreational use in June 2025 has created uncertainty, impacting retail.

https://greenhousethailand.com

Green House Seed Company активно расширяет присутствие в Таиланде с 2023 года, после легализации медицинского каннабиса в стране.

Основной упор делается на выращивании и экспорте медицинского каннабиса через дочернюю компанию Green House Medical (в партнерстве с Green House Energrow, основанной в 2023 году). Это одна из крупнейших лицензированных каннабис-фирм в мире, адаптированная под местные регуляции (GACP-сертификация для ЕС и Таиланда). 

Бизнес сочетает культивацию с розничными продажами через диспенсарии, но сталкивается с вызовами из-за недавних изменений в законодательство. Частичный запрет рекреационного использования в 2025 году негативно повлиял на рынок, потерявший около в$1 млрд. Ниже — ключевые детали на основе доступных данных на октябрь 2025 года.

Основной комплекс теплиц компании находится в районе Пхатхум Тани, это север Бангкока. Он сочетает открытые поля, теплицы с поликарбонатными конструкциями, сетками от насекомых и вентиляцией) и складские помещения. В гроу зоне находится 20–25  теплиц с системами мониторинга Agrowtek GCX Plus для климат-контроля, ирригации и освещения лампвми HPS. Это позволяет круглогодичное производство.

Если говорить о самих растиюениях, то там растят медицинский каннабис с акцентом на фенотипы лендрейсов. Генетика адаптирована под тропический климат Таиланд, используются почвенные и кокосовые субстраты. Конкретные сорта не озвучены публично, но упор делается на высоко качественные сортах для экспорта и внутреннего потребления. 

Продажа урожая в Таиланде производится в Бангкоке  по адресу: 46/202 Nuanchan Rd., район Bueng Kum. Это «Bangkok X Amsterdam» — первое официальное заведение Green House в Азии, открытое в 2023–2024 годах. Планируется строительство нескольких дополнительных диспенсариев по стране, финализация в 2025 году. Само собой, они ориентированы на медицинский каннабис. 

На основном объекте культивации работает около сотни человек. Большинство — местные специалисты, новички в каннабисе на старте, набрались опыта в выявлении проблем растений и управлении урожаем за пару лет работы. Персонал включает агрономов, техников и менеджеров. Точные цифры не раскрыты, но общий штат для Таиланда — 100–150) человек, включая персонал кофешопов. 

Финансы таиландского филиала  Green House Seeds Company не публикуются, но общий годовой доход компании около $3 млн в 2025 году. Можно прикинуть что тайский бизнес генерирует около 20% от этой цифры. Рынок каннабиса в Таиланде — 28 млрд тайских бат (~$800 млн) в 2024, с прогнозом удвоения к концу 2025, но рекриминализация рекреационного использования в июне 2025 создала неопределенность, ударив по рознице.

Основной ассортимент кофешопа в Бангкока — шишки каннабиса для медицинского использования с ТГК и КБД.  Цены: от 300–500 бат за грамм, это около $8–14. 

История кофешопов Green House Seeds началась в 1992 году, когда Арьян Роскам (Arjan Roskam), известный как «Король каннабиса», открыл первый кофешоп под названием The Green House на улице Толстраат (Tolstraat) 91 в южном районе Амстердама. Это было вскоре после того, как Роскам начал экспериментировать с экзотическими сортами каннабиса, полученными из поездок в Таиланд, Непал и другие страны и заработал первые деньги.

Кофешоп быстро стал популярным благодаря высококачественному продукту и уникальной атмосфере — здесь даже подавали алкоголь, что было редкостью для подобных заведений.

Успех первого кофешопа был подкреплен победами на престижном конкурсе High Times Cannabis Cup: уже в 1993 году Green House выиграл в общей категории, а в 1994-м — почти во всех номинациях. Это привлекло внимание международной прессы, включая High Times, поместившего Арьяна на обложку в 1995 году, и внимание знаменитостей, что способствовало расширению сети. 

К настоящему времени Green House насчитывает четыре кофешопа и два клуба в Амстердаме, включая флагманский на Толстраат, а также другие локации, такие как Green House на канале рядом с Красным кварталом и Greenhouse United.

Изначально кофешопы и сама компания Green House были основаны Роскамом в партнерстве с другими видными фигурами каннабис-индустрии, включая Невилла Шонмейкерса (Nevil Schoenmakers) — австралийского селекционера, основателя первого банка семян каннабиса «The Seed Bank». Шонмейкерс был соучредителем и помогал управлять кофешопами, внося вклад в разработку сортов, таких как Super Silver Haze, который принес победы на Cannabis Cup.

В 1998 году Шанти-Баба (Scott Blakey), еще один сооснователь компании, продал свою долю Роскаму, что позволило последнему стать единоличным владельцем Green House Seed Company. Аналогично, примерно в 1999–2000 годах Шонмейкерс продал свою часть в одном из кофешопов Роскаму. По воспоминаниям участников индустрии, между Шонмейкерсом и Роскамом возникли серьезные разногласия, включая конфликты по поводу управления и генетики. Конфликты переросли в желание разделить бизнес. 

Разделение заняло около двух лет, и после ухода Шонмейкерса качество продуктов Green House, по мнению некоторых критиков, снизилось — компания даже была дисквалифицирована на Cannabis Cup за попытку подкупа жюри.

В настоящее время Роскам остается основным владельцем сети, но у него есть партнеры, такие как Йоахим Хелмс (Joachim «Joa» Helms), совладелец легендарного кофешопа Green House и активист каннабис-движения. 

В 2016–2017 годах Green House Seed Company заключила партнерства с американскими брендами (например, O.penVAPE и Canopy Growth), но это касалось продуктов, а не кофешопов.

Сеть Green House продолжает быть одной из самых влиятельных в Амстердаме, несмотря на ужесточение правил для кофешопов. 

Каталоги Green House Seed Co. демонстрируют продуманный дизайн, качественные материалы и профессиональную презентацию. Наверное, никто не знает, сколько их было напечатано за время существования компании, так что приведём фото только нескольких.

Обложки имеют яркие, привлекающие внимание изображения растений с крупными планами, что облегчает восприятие даже послу употребления товаров от Green House Seeds. Используется контрастная цветовая палитра: темный фон с золотыми и белыми акцентами для логотипов и текста («Green House Seed Co.», «Creators of Champions»), что придает премиальный вид.

Элементы брендинга, такие как логотипы и звучные слоганы «World’s Leading Cannabis Seed Company», размещены заметно, обеспечивая узнаваемость. Наличие QR-кодов добавляет современный интерактивный элемент и облегчает переход на сайт.

Во всех каталогах использована глянцевая бумага высокого качества, что защищает от износа и усиливает яркость изображений. Текстура и блеск на фото предполагают плотный материал, что типично для каталогов премиум-класса. ФорматА5 очень компактен и удобен для хранения и чтения, всё продумано!!

Каталоги аккуратно оформлены, с четкой типографикой и выравниванием текста, что говорит о более чем профессиональной вёрстке и печати. Многоязычный подход указывает на ориентацию на международную аудиторию. Немаловажно, что указание года печати и специальных выпусков, например, «USA Strains Releases», создает ощущение коллекционной ценности и актуальности.

Общий стиль подчеркивает статус компании как лидера в своей нише, сочетая эстетику и функциональность.