About Dr. Greenthumb
Dr. Greenthumb is a cannabis breeder with over 25 years of experience in growing and breeding cannabis seeds in Eastern Canada. They are known for their diverse range of strains, including feminized and regular seeds, with a focus on indica, sativa, and hybrid varieties. Their strains are popular among growers for their quality and unique characteristics.
Dr. Greenthumb at a glance
Dominant type
Indica (45%)
Avg. flowering
60 days
Typical difficulty
Moderate
Catalogue mix
1 auto · 26 fem
CannAIAI Strain Matching
Which Dr. Greenthumb strain actually fits your grow?
CannAI matches Dr. Greenthumb's 44 genetics to your climate, space, experience level, and goal — not a generic catalogue browse.
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Strains by Dr. Greenthumb
G13
Indica
24% THCThe Dope
Indica
Iranian Bubba Kush
Indica
26% THCChumaluma
Hybrid
29% THCJazz
Hybrid
13% THCJ.j.s Gold
Sativa
24% THCBig Laughing
Indica
32% THCIranian Haze
Sativa
22% THC
Headband
Hybrid
20% THCChemdawg
Indica
21% THC
Golden Haze
Hybrid
25% THCFreedom 35
Indica
25% THCMillennium Bud
Indica
Oh! Zone
Hybrid
26% THCIranian Cindy 99
Sativa
25% THC
Cindy 99
Sativa
22% THCIranian Chemdawg
Hybrid
25% THCIranian Diesel
Indica
22% THC
NEW WiFi OG (White Fire) ♀
Indica
Chemo Bubba Kush ♀
Indica
NEW Turkish Cookies ♀
Indica
Sweet 105
Hybrid
25% THCEndless Sky
Hybrid
22% THCBubba OG
Indica
25% THCGrenadine
Hybrid
22% THCEast Coast Sour Diesel
Sativa
22% THCBubba Kush
Indica
20% THCColumbian Skies
Sativa
25% THC747
Hybrid
5% THCKashmir Resin Factory
Indica
22% THCIranian G13
Indica
24% THCIranian OG Kush
Hybrid
26% THCFire Hydrant
Indica
32% THCNiagara
Hybrid
19% THCFlook Juice
Hybrid
25% THCIranian Auto Flower
Indica
22% THCOG Kush
Indica
21% THCGood Dog
Hybrid
32% THCMatanuska Thunderfuck
Sativa
35% THCPanama Red
Sativa
17% THCOriginal U.k. Cheese
Indica
24% THCBig Purps (aka: Purple)
Hybrid
28% THCNiagara X Shiva
Indica
25% THCTrainwreck
Sativa
20% THCMore breeders from Canada
Same scene, different genetics — keep exploring.
