Indica Dominant · Seed Junky Genetics
GMO Cookies
GMO Cookies, also released as Garlic Cookies or simply GMO, is the Chemdawg x Girl Scout Cookies cross attributed to Mamiko Seeds with several seed-form versions later distributed through Seed Junky Genetics and partner breeders. The strain is best known for an unusual savory terpene profile that mixes garlic, onion, and roasted coffee on the inhale with a sharp diesel exhale from the Chemdawg parent — a flavor unlike anything else on commercial dispensary menus. Plants finish in nine to ten weeks indoors with dense, dark-green buds and an unusually heavy trichome coverage that gives finished flower a near-silver appearance. The high is heavy and physical with a strong body opening, which makes it a common evening or pre-sleep pick despite testing in the upper THC range for a Cookies-family cross.
Reviewed 2026-05-23· Sources: seedfinder.eu, Mamiko Seeds notes, Seed Junky retailer info
Potency
- THC range
- 22–30%
- Typical THC
- 26%
- CBD
- up to 0.1%
Flowering
- Indoor weeks
- 9–10 wk
- Difficulty
- Moderate
- Climate
- Mediterranean, indoor
Yield & size
- Indoor
- 450-550 g/m²
- Outdoor
- 450-650 g/plant
- Height
- 100-130 cm
Indica / sativa ratio
Terpene profile
The aromatic compounds below shape how GMO Cookies smells, tastes, and ultimately feels in the body.
- dominant
Caryophyllene
Peppery and spicy — the only terpene that binds CB2 receptors, studied for anti-inflammatory action.
- secondary
Limonene
Uplifting citrus — typically associated with mood elevation and stress relief.
- secondary
Myrcene
Sedating, musky, herbal — commonly linked to couch-lock effects.
- minor
Humulene
Hoppy and earthy — appetite-suppressing and shared with hops and sage.
Reported side effects
Lineage
GMO Cookies traces to Chemdawg × Girl Scout Cookies. The cross sits in the Cookies / Chem family, which influences both the terpene profile and the flowering structure described above.
Genetic family tree
Documented parents and grandparents for GMO Cookies based on breeder catalogues. Library entries are clickable; ancestors not yet documented on this site appear in a lighter, non-linked box.
Strains crossed with GMO Cookies
GMO Cookies is a parent of 3 strains in the broader catalogue. These are crosses that carry GMO Cookies genetics on at least one side of the cross.
Grow profile
Grow profile
- Indica / sativa
- 70% / 30%
- Flowering days
- 63–70 days
- Stretch
- Moderate
- Pest resistance
- Moderate
- Mold resistance
- Moderate
- Training methods
- topping, lst, scrog
Feed schedule for GMO Cookies
These EC and NPK targets are starting points calibrated for the strain's Indica lean and moderate difficulty rating — not gospel. Drop 15-20% off any EC ceiling on your first run and let the plant tell you where it actually wants to feed.
Suggested feed schedule
- Late veg
- 1.4-1.6 EC
- Early flower
- 1.5-1.7 EC, NPK 2-3-4
- Mid flower
- 1.8-2.0 EC, NPK 1-4-6
- Late flower
- 1.6-1.8 EC
- Final week
- Plain pH-balanced water for the last 7-10 days; light flush if you ran nutrients on the higher end.
Full breakdown of feed math, runoff testing, and salt buildup in our nutrient guide.
What to expect through the grow cycle
GMO Cookies is documented with a 10-week flower and a compact stretch typical of indica-leaning structure. The visual below maps a documented 14-week cycle built from 4weeks of vegetative growth and the strain's published flowering window.
Published grow reports for GMO Cookies concentrate the most observational notes on the late-flower ripening window. This timeline is descriptive — it reflects what reports document, not a how-to. Actual week-to-week behaviour varies with phenotype, light intensity, pot size, and environment.
Phase details
- Veg (weeks 1-4)
- The documented vegetative period for GMO Cookies. Plants establish root structure, leaf canopy, and node count before flower triggering, with a moderate difficulty rating shaping how forgiving the early canopy work tends to be.
- Stretch (weeks 5-8)
- GMO Cookies is documented as having moderate stretch. Reports describe the plant roughly doubling in height during this phase as the indica-leaning structure establishes its final flowering frame.
- Bud sites (weeks 9-10)
- Pre-flowers form at the nodes and calyxes begin to develop. Grow reports for GMO Cookiesnote this as the window where the canopy's eventual bud distribution becomes visible.
- Bud development (weeks 11-12)
- Flowers thicken and calyxes fatten through this phase. Documented GMO Cookies runs show the bulk of visible flower mass accumulating here, with resin production accelerating toward the end.
- Ripening (week 13)
- Trichomes transition from clear toward cloudy and amber. Reports for GMO Cookies describe the Caryophyllene-led terpene profile maturing through this window, with aroma sharpening week over week.
- Final (week 14)
- Calyx swelling is documented as complete and the harvest window opens. Published GMO Cookies runs end here, within the 9-10 week flowering range reported by the breeder.
Flavor & aroma
Reported effects
Common questions about GMO Cookies
Why does GMO Cookies smell like garlic?
The Chemdawg parent contributes an unusual sulfur-forward terpene expression that, combined with the Cookies side, produces a savory garlic-and-onion note rather than the sweet dessert profile of most Cookies derivatives. The expression is distinctive enough to identify the strain by smell alone.
Is GMO the same as Garlic Cookies?
Yes — GMO and Garlic Cookies are two names for the same Chemdawg x Girl Scout Cookies cross. Different retailers use different names but the underlying genetics are identical.
Breeder of record
Seed Junky Genetics
View breeder profile and other strains →
More from Seed Junky Genetics
Strains similar to GMO Cookies
These picks lean on the same terpene profile and parent genetics as GMO Cookies — shared dominant terps, overlapping lineage, and matching indica/sativa lean. No star ratings or popularity contests, just overlap on the traits that actually drive a similar grow and smoke.