DR. GREENTHUMB SEEDS
“Your Trusted Cannabis Seed Bank Since 1996”
Dr. Greenthumb Cannabis Seeds Canada
With our seeds and a little bit of knowledge, you can grow the finest Cannabis in the world. Your trusted Cannabis seed bank since 1996. Dr. Greenthumb has over 50 years of experience in growing and breeding Cannabis.
Our Pledge to you:
Many seedbanks sell fakes and knockoff seeds made with random pollinations. We will not knowingly sell any strain that is misnamed or is of false or unknown parentage.
Many seedbanks sell seeds that are almost guaranteed to produce so-called “hermi” plants. We will never sell a strain that will produce a hermaphroditic plant under normal growing conditions. Under proper growing conditions, our genetics are trouble-free and will grow the way they should.
Note: Every seed batch we sell has been tested for viability. Every seed we package is inspected under magnification to ensure quality. All our seeds are “certified” to be disease free to ensure you never bring home a seed-borne cannabis disease into your grow room or outdoor crop.
Freedom 35 ♀ Cannabis Seeds
- In Stock
- Trippy and Spacey
- Taste: Dried cured taste is like Caramel
- Potency: 4½ out of 5
Blue Dream ♀ Cannabis Seeds
- In Stock
- Very Easy to Grow
- Taste: Very Intense Berry Taste
- Potency: 4½ out of 5
Bubba Cheese ♀ Cannabis Seeds
- In Stock
- Bouquet: Wonderful – Glorious
- Taste: Bubba Cheese Taste
- Potency: 4½ out of 5
Bubba Kush ♀ Cannabis Seeds
- In Stock
- Bouquet: Sweet – Pungent
- Taste: Hashy – Fruity – Diesel
- Potency: 4½ out of 5
Bubba OG ♀ Cannabis Seeds
- In Stock
- Bouquet: Sweet – Pungent
- Taste: Hashy – Fruity – Diesel
- Potency: 4¾ out of 5
Chemo Bubba Kush ♀ Cannabis Seeds
- In Stock
- Bouquet: Unforgettable – Hashy
- Taste: Classic Bubba Taste and Smell
- Potency: 4¾ out of 5
(NEW) Carnage ♀ Cannabis Seeds
- In Stock
- Bouquet: Sweet Hashy smell with fuel notes.
- Taste: Sweet with fuel notes
- Potency: 4¾ out of 5
Chemdawg ♀ Cannabis Seeds
- In Stock
- Hardly Any Trimming
- Taste: Diesel – Exotic Spice
- Potency: 4½ out of 5
Classic East Coast Sour Diesel
In Stock
- Excellent Cerebral Buzz, Heady.
- Taste: Pungent Diesel – Fuel
- Potency: 4½ out of 5
Classic Cindy 99 ♀ Cannabis Seeds
- In Stock
- The Original Bros. Grimm Strain
- Taste: Fruity – Pineapple – Citrus
- Potency: 4½ out of 5
Colombian Skies ♀ Cannabis Seeds
- In Stock
- Potency: 4½ out of 5
- Bouquet: Earthy
- Taste: Like Old Time Colombian!
Classic G13 ♀ Cannabis Seeds
- In Stock
- Highest Yield plant we know of.
- Taste: Lightly Fragrant – Fruity
- Potency: 4½ out of 5
OH! Zone ♀ Chemo X OG Cannabis Seeds
- In Stock
- High Yielding!
- Bouquet: Sweet – Grassy
- Potency: 4½ out of 5
Genuine Girl Scout Cookies ♀ Cannabis Seeds
- In Stock
- Bouquet: Coffee – Chocolate
- Taste: Like Bubba Kush and OG Kush Hashy – Deep – Pungent
- Potency: 4½ out of 5
Good Dog Cannabis Seeds
- In Stock
- Very “UP” soaring high.
- Taste: Fruity – Floral
- Potency: 4¾ out of 5
Genuine GG #4 ♀ Cannabis Seeds
- In Stock
- Very crystalline buds.
- Taste: Exotic
- Potency: 4½ out of 5
WiFi (White Fire OG) ♀ Cannabis Seeds
- (New) In Stock
- Taste: Dark, Creamy, Complex, Hashy
- Heady Buzz
- Potency: 4¾ out of 5
Learn More
Genuine Headband ♀ Cannabis Seeds
- In Stock
- Long Spears of Buds.
- Extreme Resin and Potency
- Citrus – Pungent Sour Fuel
- Potency: 4¾ out of 5
Jazz ♀ Cannabis Seeds
- In Stock
- A popular and very potent Sativa dominant strain developed in-house.
- Bouquet: Citrus Fruit
- Potency: 4¾ out of 5
Turkish Delight ♀ Cannabis Seeds
- In Stock
- Bouquet: Perfume – Elegant – Classy
- Taste: Totaly Different & Unique Flavour
- Potency: 4¾ out of 5
- Our 2oth Anniversary Strain
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Panama Red ♀ Cannabis Seeds
- (New) In Stock
- Very potent, long-lasting
- May be grown at 12-12 from seed.
- Potency: 4½ out of 5
Learn More
Matanuska Thunderfuck ♀ Cannabis Seeds
- In Stock
- High Yielding!
- Bouquet: Sweet – Grassy
- Potency: 4½ out of 5
Genuine Classic Train Wreck ♀ Cannabis Seeds
- In Stock
- Unique, Unforgettable Pungent Taste.
- Bouquet: Pine with Earthy Tones.
- Potency: 4¾ out of 5
- The Heaviest Sativa Dominant Plant We Know Of
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Ultimate Hash Plant ♀ Cannabis Seeds
- In Stock
- Bouquet: Sandalwood
- Taste: Hashy, exotic, intoxicating
- Potency: 4½ out of 5
- Large Trichomes for Ease of Screening or Collection
Learn More
Classic OG Kush ♀ Cannabis Seeds
- In Stock
- Ghost Cut
- Bouquet: Lemon – Citrus with Floral Notes
- Taste: Rich – Lemon – Caramel
- Potency: 4¾ out of 5
Indoor Outdoor
Iranian Bubba Kush ♀ Cannabis Seeds
- In Stock
- Happy, Good Time Fun.
- Taste: Unforgettable Deep Coffee –
- September Finish
- Potency: 4½ out of 5
Iranian Chemdawg ♀ Cannabis Seeds
- In Stock
- Happy, Soaring and Social High
- Taste: Great Sour Fuel Taste
- Early Finish With High Yield
- Potency: 4½ out of 5
Iranian Cindy 99 ♀ Cannabis Seeds
- In Stock
- A True Benchmark Strain.
- Taste: Fruity – Pineapple – Citrus
- Potency: 4½ out of 5
- Early outdoor finish in a Sativa dominant plant.
Iranian Diesel ♀ Cannabis Seeds
- In Stock
- Excellent Cerebral Buzz
- Taste: Like it Smells – Sour – Fuel – Diesel
- Potency: 4¾ out of 5
- One of our most popular early finishing outdoor plants.
Iranian G13 ♀ Cannabis Seeds
- In Stock
- High Yield!
- Taste: Pungent – Hashy
- Potency: 4¾ out of 5
Iranian Haze ♀ Cannabis Seeds
- In Stock
- Feels Mildly Psychedelic.
- Taste: Sweet Incense
- Potency: 4¾ out of 5
Iranian OG Kush ♀ Cannabis Seeds
- In Stock
- Very Potent
- Taste: Rich – Earthy – Piney
- Potency: 4¾ out of 5
Autoflower Seeds
Original Genuine Iranian Autoflower ♀ Cannabis Seeds
- In Stock
- Unique, Unforgettable Pungent Taste.
- Bouquet: Pine with Earthy Tones.
- Potency: 4¾ out of 5
- Very Potent
- Outdoor Harvest July Onwards
WhipLash OG AutoFlower ♀ Cannabis Seeds
- In Stock
- Pungent OG Taste & Potency
- About the same yield as 30″-36″ tall OG on a 2-foot plant.
- Potency: 4¾ out of 5
Learn More
Gold Mine ♀ Cannabis Seeds
- In Stock
- August – September Finish
- Bouquet: Sweet – Hashy
- Taste: Creamy – Butterscotch
- Potency: 4½ out of 5
Breeder Packs
Big Laughing Cannabis Seeds
- In Stock – Ordering Code BL
- Regular Un-Feminized
- Bouquet: Earthy – Piney
- Taste: Hashy
- Potency: 4½ out of 5
Endless Sky Cannabis Seeds
- In Stock – Ordering Code ESR
- Regular Un-Feminized
- Very Potent Excellent Yield
- Bouquet: Hashy
- Potency: 4¾ out of 5
MIllennium Bud ♀ Cannabis Seeds
- In Stock
- VERY INTENSE STONE!
- Bouquet: Heavy – Hashy – Pungent
- Potency: 4½ out of 5
Non Profiled Strains
ChemDawg G13 ♀ Cannabis Seeds
- ON SALE & IN STOCK
- CHEMDAWG G13- Feminized ♀-
- Product Code- CGF
- BIG INDOOR YIELD
Chemo Iranian ♀ Cannabis Seeds
- In Stock
- CHEMO IRANIAN- Feminized ♀
- Product Code- CIF
New Turkish Cookies ♀ Cannabis Seeds
- ON SALE & IN STOCK
- TURKISH COOKIES- Feminized ♀-
- Product Code- TCF
Dr. Greenthumb “Your Trusted Cannabis Seed Bank Since 1996”
Autoflowers
Iranian Auto Flower ♀
WhipLash Auto Flower ♀
Iranian Auto Flower ♀
WhipLash Auto Flower ♀
Non Profiled Strains
Chemdawg G13 ♀
Chemo Iranian ♀
NEW Turkish Cookies ♀
Breeder Packs
Big Laughing
Regular Un-Feminized Endless Sky
Millennium Bud