The Official Cannabis Independent strain guides
GMO Cookies No 63 Shop
The Official Cannabis collection · sheet 63No 63 · GMO Cookiesvs Girl Scout Cookies

Comparison

GMO Cookies vs Girl Scout Cookies

GSC is the Cookies half of GMO Cookies: its Forum cut, crossed with Chem D by Mamiko Seeds.1,2 Leafly lists GSC as minty, sweet and mostly energizing and GMO as chemical, peppery and mostly calming, and in state labs GMO tests higher: 26.74% median THC against 19.72% for GSC.3,4,5

Side by side

GMO CookiesGirl Scout Cookies
TypeIndica-dominant hybrid; mostly calming per Leafly4Hybrid; mostly energizing per Leafly3
LineageChemdawg (Chem D) × Girl Scout Cookies (Forum cut)1,4OG Kush sub-type × F1 Durban, by Jigga3
Median THC (state lab tests)26.74% (2,159 tests)19.72% (567 tests)
Middle half of THC results23.46%–29.83%17.80%–21.92%
Top terpenes (median)Limonene, β-Myrcene, β-Caryophyllene (456 tests)β-Caryophyllene, Limonene, α-Humulene (158 tests)
Leafly’s top effectsRelaxed, sleepy, euphoric4Relaxed, hungry, happy3
FlavorChemical, pepper, pungent4Mint, sweet, earthy3
Leafly THC listing28%425%3

Lab rows come from the same state lab dataset and matching rules for both strains.5

Lab-tested THC: GMO Cookies vs Girl Scout Cookies

16% 20% 24% 28% GMO Cookies GMO Cookies: median 26.74%, middle half 23.46%–29.83%, 2,159 tests 26.7% n=2,159 Girl Scout Cookies Girl Scout Cookies: median 19.72%, middle half 17.80%–21.92%, 567 tests 19.7% n=567 Median total THC (dot) and middle half of tests (bar)
Median and middle half of total THC in state lab tests.5

The Forum cut

The GSC in GMO is the Forum cut, named for the internet forums where growers debated a cutting that a grower known as Ghost obtained in 2008.2,6 The Forum cut has its own guide in the Official Cannabis network at forumcookies.com.

More comparisons

Sources

  1. Weedmaps, GMO Cookies (aka Garlic Mushroom Onion) strain page. Accessed Oct 4, 2026.
  2. SeedFinder, GMO Cookies (Mamiko Seeds): strain info and breeder description. Accessed Oct 4, 2026.
  3. Leafly, GSC (aka Girl Scout Cookies) strain information. Accessed Oct 4, 2026.
  4. Leafly, GMO Cookies (aka Garlic Cookies, GMO Garlic Cookies) strain information. Accessed Oct 4, 2026.
  5. Cannlytics (CC BY 4.0), cannabis_results: public state lab results (filtered and aggregated by Official Cannabis). Accessed Oct 4, 2026.
  6. Leafly, Just desserts: the Cookies and Cakes family genealogy (David Downs) (2024-04-09). Accessed Oct 4, 2026.