GMO Strain

Tim Harris

The GMO strain of marijuana is an example of “multiple discovery” in the cannabis industry. Two similar versions of a strain (originally coined Chem Cookies) were bred separately by different growers and both became heavily distributed. Most agree that the name “GMO” was given to a phenotype of Mamiko Seeds’ Chem Cookies by Skunkmaster Flex (see the December 1st issue of High Times or this IG post).

Contrary to urban legends about “garlic, mushrooms, and onions,” Skunkmaster Flex reports that he named this phenotype after reading a headline about Girl Scout Cookies (the actual cookies!) containing genetically modified ingredients. The GMO nickname has been in circulation since at least 2014, and at some point both Divine Genetics and Mamiko Seeds changed/added the name ‘GMO’ or ‘GMO Cookies’ to the seeds of their Chem Cookies strains.

In the aforementioned 2017 High Times issue, Danny Danko refers to the Skunkmaster Flex GMO cut as “D-Cookies” to distinguish the Chem D lineage from the Chemdog #4 lineage (Chem D is a more contemporary selection of the original Chemdog ‘91 that produced Chemdog #4).

D-Cookies is one of the only ways we’ve found to distinguish between the two different varieties, as the names GMO, GMO Cookies, and Garlic Cookies can all refer to either one of the original Chem Cookies strains.

The effects of either variety are not entirely different, but not quite identical. When it’s necessary to distinguish them we’ll refer to the Skunkmaster Flex’s lineage as D-Cookies, and we’ll call the Divine Genetics’ version Chem 4 Cookies.

gmo cookies cannabis bud photo

GMO Strain Genetics

Lineage 1, D-Cookies

Girl Scout Cookies (forum cut) x Chem D, bred by Mamiko Seeds

Lineage 2, Chem 4 Cookies

Girl Scout Cookies (forum cut) x Chemdog #4, bred by Divine Genetics

Vintage: 2010s (both)

Also Known As: Chem Cookies, GMO Cookies, D-Cookies, Garlic Cookies


Lineage 1: @mamikoseeds (IG) posted a pic from @moe_lasses on feb 19th, 2017.

On November 2nd, 2020 they posted pics of outdoor Chem Cookies. High Times also has pictures below.

Lineage 2: @divine_genetics (

GMO Strain Effects

The D-Cookies GMO provides a very vibrant and focused body high with less prevalent couchlock than Girl Scout Cookies. Some users still find it very sedating, but others are able to enjoy it throughout the day without missing a beat! This type of dynamic effect is typical of Chem D, which is truly an old school “hybrid” that can show different parts of its lineage based on the mood and setting it’s used in. D-Cookies is a great choice for fans of Sour Diesel. 

The Divine Genetics Chem #4 Cookies tends to provide much heavier, sedative effects, and users may not find as much versatility, although most still report it to be a very stimulating strain. This version brings out more of the couchlock potential of the Girl Scout Cookies and doesn’t skimp on the psychoactivity!

Not all flowers are grown equally! Effects, potency, and appearance are all affected by how the plant you hold in your hands was grown- check out our article, Do Strain Names Matter? to learn more!

GMO Strain Medical Benefits

Obviously a bit muddled from the two different lineages in circulation, but patients have reportedly used GMO strains to treat common physical ailments like pain, inflammation, and arthritis. The mood-enhancing effects may aid those suffering from depression, while its sedative side can alleviate insomnia.

GMO users have reported side effects like dry mouth, red eyes, & dizziness. 

GMO Strain Characteristics

D-Cookies has slender foxtailed buds with spicy and musty flavors. Village Grows says, “Both the classic ‘musty sock drawer’ essence of Chem D (aka Chem Dirty Sock pheno) and the ‘spicy curry thin mints’ essence Forum Cookies can be noticed in the taste on exhale”. 

Chem #4 Cookies has a very similar slender, fox-tailed structure but its aroma and flavor lean towards sweeter notes, stronger diesel characteristics, and hints of coffee. 

GMO Strain Awards

GMO flower was included in the 10 Best Weed Strains of 2018 by High Times. Here’s what they had to say:

“With a unique name and an uncommon terpene profile, GMO Cookies has taken the cannabis-connoisseur world by storm. @SkunkMasterFlex1 found this gem of a phenotype from a pack of Mamiko Seeds’ D-Cookies. Most people would be disgusted at the aroma and flavor of a strain being described with such terms as “garlic, halitosis, DMT and dry socket,” but the rareness of this variety makes it very special. She yields heavy, tests high, gives great returns on hash, has strong bud structure and looks incredible! Take this one down at around 70 to 74 days for optimal effects.”


GMO is a high THC strain with low CBD. It’s main terpenes are limonene and caryophyllene, with myrcene and humulene being prevalent in many variations. Due to the number of strain names used interchangeably, it’s hard to describe an exact chemotype for the GMO strain. 

Because it goes by so many interchangeable names, it’s hard to nail down a specific chemotype, or chemical profile, for the GMO strain. In some phenotypes, the terpene profile is dominated by a 1:1 ratio of limonene and beta caryophyllene, with a considerable myrcene component. Other phenotypes are reported to be myrcene-dominant, with considerable beta-caryophyllene and less limonene. 

GMO’s pungent, spicy smells can be attributed to the presence of myrcene and caryophyllene, but limonene is harder to detect with the senses because it takes on so many different scents depending on what it’s combined with. In other words, just because it doesn’t smell like citrus doesn’t mean limonene isn’t a dominant terpene, but GMO isn’t a strain with fresh, bright citrus-like smells. Look for savory, garlic, food-like smells to dominant the aroma of authentic GMO!


GMO Cookies is a high yielding strain that’s considered easy to grow. It reaches a medium height and branches well. It’s expected to stretch significantly during flowering, by a factor of 3-4x according to Dark Heart Nursery. Returns well for hash makers. Expect a flowering time of at least 70-84 days, but it may take 77-84 days to fully mature.


Compared to many of the other firehot exotic strains, Chem Cookies is one that’s still fairly available. Check out Hembra Genetics for the Mamiko Seeds line that Skunkmaster Flex found his GMO cut from. Just to be clear, you’ll find some variation in those seeds and you’ll have to search for something that’s similar to the D-Cookies GMO phenotype.

The Divine Genetics Chem Cookies seeds were well distributed but we haven’t found them in stock at any reputable sources lately, but we’ll keep you updated!


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