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.


Two similar versions of what was originally called Chem Cookies were bred separately by different breeders and both have become well circulated. 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). That nickname has been in circulation since at least 2014, and at some point both Divine Genetics and Mamiko Seeds changed or added the name ‘GMO’ or ‘GMO Cookies’ to the seeds of their Chem Cookies strains. Contrary to urban legends about “Garlic, mushrooms, and onions”, Skunkmaster Flex reports that he named the pheno after reading a headline about Girl Scout Cookies (the actual cookies!) containing genetically modified ingredients. 

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) and that’s one of the only ways we’ve found to actually distinguish the two different varieties of Chem Cookies. Unless it’s called D-Cookies, 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 Strain Genetics

Lineage 1

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

Lineage 2

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

10 Best Weed Strains of 2018,


High THC, Low CBD, 1% CBG. Primary terpenes limonene and caryophyllene come in a 1:1 ratio. Secondary terpenes include caryophyllene and humulene.


Medium height plant branches well with very heavy yields of beautiful high THC buds. Returns well for hash makers. Expect a flowering time of 70-84 days.


Hembra Genetics


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