GMO Cookies is an indica-dominant cannabis strain bred from Chemdawg and Girl Scout Cookies, known for a pungent garlic and diesel smell and a very strong, sedating high. The name stands for garlic, mushroom and onion, not genetic modification, and the strain is also sold as Garlic Cookies. Retail flower often tests above 25% THC, so it is aimed at experienced consumers.
GMO Cookies Strain at a Glance
| Type | Indica-dominant hybrid |
|---|---|
| Also known as | Garlic Cookies, GMO |
| Lineage | Chemdawg × Girl Scout Cookies |
| Breeder / origin | Disputed; credit is given to Mamiko Seeds and to a grower known as Skunkmasterflex, and the cut circulated through California |
| THC | 24–30% (typical lab range) |
| CBD | Under 1% |
| Dominant terpenes | Beta-caryophyllene, Limonene, Myrcene |
| Aroma and flavor | garlic, diesel, skunk, earthy funk, onion, sweet dough |
| Reported effects | relaxed, euphoric, sleepy, happy |
| Best for | night use, experienced consumers, unwinding |
| Flowering time | 9–10 weeks |
Where GMO Cookies Comes From
GMO Cookies is usually described as a cross of Chemdawg, specifically a Chemdog D cut in most accounts, and a Girl Scout Cookies selection from the GSC Forum line. The Chemdawg half is what gives the strain its famous savory, funky smell. Girl Scout Cookies adds the sweet, doughy backbone and a good share of the strong body effect.
The breeder credit is not settled. Some sources credit Mamiko Seeds. Others say the skunky phenotype was found by a grower called Skunkmasterflex. A separate seed company sells a cross called Chem Cookies, which is a different cut and not the same plant. Because the original was spread by clone, what you get at a dispensary depends on whose cut they grow.
The GMO label became a talking point because dispensaries were wary of putting those three letters on a menu, so many shops switched to Garlic Cookies. The strain exploded in popularity in the late 2010s and remains one of the most requested high-potency cuts. It is also a favorite for hash and rosin, where the savory terpenes carry through well.
GMO Cookies Effects: What It Feels Like
GMO Cookies hits quickly. Expect a wave of heavy, happy relaxation in the first few minutes, with a warm head and a body that feels weighed down in a pleasant way. The mind slows, worries fade and many people get giggly or talkative before the sedation arrives.
The back half is the part to plan for. Most users report strong couch-lock and sleepiness, and a big dose can lead to a nap. That makes it an evening or bedtime strain rather than something for a busy day. Tolerance matters here: with typical THC in the high 20s, someone new to cannabis could find it overwhelming, so a small amount is plenty.
GMO Cookies Terpenes, Aroma and Flavor
Open a jar and the smell is unmistakable: roasted garlic, onion, diesel and a damp, mushroomy earthiness, with just a hint of sweet cookie dough underneath. It is a love-it-or-hate-it nose, and the funk lingers in a room.
The flavor follows the smell. The inhale tastes of garlic and fuel, and the exhale leaves a savory, slightly sweet finish. Caryophyllene is often the leading terpene in reported lab tests, with limonene and myrcene behind it, and the sulfur-like volatile compounds that give cannabis its skunk can account for much of the garlic character.
- Beta-caryophyllene: peppery and spicy, also found in black pepper and cloves
- Limonene: bright citrus, also found in lemon and orange peel
- Myrcene: earthy, musky and herbal, also found in mango and hops
Terpene levels vary from grower to grower and batch to batch, so check the lab label on the package. Learn more in our guide to cannabis terpenes.
Side Effects and How to Use GMO Cookies
Dry mouth and dry eyes are the most common complaints. At higher doses, GMO Cookies can cause dizziness, heavy sedation and, for some people, racing thoughts or paranoia. Strong smell also means it is hard to use discreetly. Start low, avoid driving and give it time before taking more.
How strong GMO Cookies feels depends on the batch, your tolerance and how you consume it. Start low, go slow, and read our guide to dosing cannabis.
Do People Use GMO Cookies for Medical Reasons?
In consumer reviews, GMO Cookies is often mentioned for trouble sleeping, stress, appetite and general body tension. Its heavy sedation is what most users cite. These are user reports and not medical advice, and anyone with a health concern should ask a healthcare professional.
These are user reports, not clinical findings. For what research actually supports, see our cannabis health and research section, and talk to your doctor before using cannabis for a health condition.
Growing GMO Cookies
- Difficulty: Moderate
- Flowering: 9–10 weeks
- Yield: Medium
- Height: Medium
- Environment: Indoor preferred; greenhouse possible
GMO Cookies tends to be a medium-height plant with dense, frosty buds. Those dense flowers can hold moisture, so humidity control matters, and in the wet Pacific Northwest fall an outdoor crop is at risk of mold. Indoor growers report good results with careful defoliation and steady airflow. Flowering time and yield vary by cut, and clone-only sources are the safest way to get the real thing.
Home-grow rules depend on the state: adults can grow at home in states such as California (six plants per residence), Michigan (12 per residence) and Oregon (four per household), while Washington and Illinois allow home growing only for registered medical patients. Check your state in our cannabis laws by state guide before you plant anything.
Strains Like GMO Cookies
- Girl Scout Cookies: the sweet cookie parent
- Chemdawg: the diesel and garlic parent
- Chemdawg #4: a close relative of the Chemdawg line with a similar funk
- Gorilla Glue: another sticky, diesel-heavy strain with a powerful body high
- Cheese: a pungent, savory strain for people who like the funk
- Wedding Cake: a Cookies family strain with a milder, sweeter profile
Browse more indica strains, the full strain directory, or our guide to cannabis strains.
More Indica Strains to Explore
Godfather OG · God’s Gift · Gooberry · Glueball · Glookies · Glitter Bomb · All indica strains
Where to Buy GMO Cookies
Dispensary menus change every week, and GMO Cookies may be sold under its own name, as a cross or as a pre-roll or vape. The fastest way to find it is to check store menus online before you go. In Ann Arbor, browse Ann Arbor dispensaries and check the menus at stores like Skymint – District Park and Green Acres Ann Arbor 2. In Tacoma, browse Tacoma dispensaries and check the menus at stores like Commencement Bay Cannabis Red and Zips Cannabis on 6th Ave. You can also browse licensed dispensaries in every state we cover. Adults 21 and older can buy with a valid photo ID; see cannabis laws by state for purchase limits.
GMO Cookies FAQ
What does GMO stand for in GMO Cookies?
Garlic, mushroom and onion, a reference to the strain’s savory smell. It does not mean the plant is genetically modified.
Is GMO Cookies indica or sativa?
It is an indica-dominant hybrid, with a heavy, sedating effect that most people prefer at night.
How strong is GMO Cookies?
Reported THC for flower runs from the mid-20s into the low 30s, which is very strong. Always check the lab label for the batch.
What is GMO Cookies a cross of?
Chemdawg, usually the Chemdog D cut, and a Girl Scout Cookies selection.
Why is GMO Cookies also called Garlic Cookies?
Dispensaries renamed it to avoid the GMO label, and the new name also describes the garlic smell.
Is GMO Cookies good for sleep?
Many users find it strongly sedating and use it in the evening. Individual responses vary.
For adults 21+ in legal states. Strain information reflects breeder descriptions, lab data and user reports; effects vary by person and batch. Not medical advice.