The Official Cannabis Independent strain guides
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The Official Cannabis collection · sheet 19No 19 · GSCvs GMO Cookies

Comparison

GSC (Girl Scout Cookies) vs GMO Cookies

Leafly calls GMO Cookies a GSC × Chemdawg hybrid bred by Mamiko Seeds. GMO Cookies has a higher than GSC’s median in the same state-lab dataset: 26.74% versus 19.72% total THC.1,2,3

Side by side

GSCGMO Cookies
TypeHybrid; source labels disagree about the lean.4,5,6Indica-dominant hybrid.2
LineageOG Kush × F1 Durb in the primary account; the Durban Poison connection is disputed.3,4,5GSC × Chemdawg; Leafly names Mamiko Seeds as breeder.2
Median THC (state lab tests)19.72% (567 tests)126.74% (2,159 tests)1
Middle half of THC results17.80%–21.92%123.46%–29.83%1
Top terpenes (median)β-Caryophyllene, Limonene, α-Humulene (158 tests)1Limonene, β-Myrcene, β-Caryophyllene (456 tests)1
Leafly top reported effectsRelaxed, hungry, happy in Leafly’s user reports.4Relaxed, sleepy, euphoric.2
Leafly top flavorsMint, sweet, earthy in Leafly’s user reports.4Chemical, pepper, pungent.2
Flowering panelAbout 9–10 weeks on Leafly’s panel; Weedmaps says roughly 62–71 days.4,58–9 weeks on Leafly’s grow panel.2

Lab rows come from the same state lab dataset and matching rules for both strains.1

Lab-tested THC: GSC vs GMO 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 GSC GSC: 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.1

A direct documented cross

Leafly’s GMO Cookies page calls the strain GSC × Chemdawg, while Leafly’s family history describes Chemdog-and-Cookies crosses under the GMO Cookies name. That agreement makes the parent/offspring framing more direct here than in the disputed Durban comparison.2,3

Store listings in two markets

In Weedmaps snapshots from Oct 5, 2026 (GSC) and Oct 4, 2026 (GMO Cookies), 71 stores within 50 miles of Los Angeles listed GSC flower on Weedmaps, against 193 stores for GMO Cookies; around New York the counts were 54 and 93.7

More comparisons

Sources

  1. Cannlytics (CC BY 4.0), cannabis_results: public state lab results (filtered and aggregated by Official Cannabis). Accessed Oct 5, 2026.
  2. Leafly, GMO Cookies strain information. Accessed Oct 5, 2026.
  3. Leafly, Just desserts: the Cookies and Cakes family genealogy (David Downs) (2021-04-15). Accessed Oct 5, 2026.
  4. Leafly, GSC aka Girl Scout Cookies strain information. Accessed Oct 5, 2026.
  5. Weedmaps, GSC strain page. Accessed Oct 5, 2026.
  6. AllBud, Girl Scout Cookies marijuana strain information and reviews. Accessed Oct 5, 2026.
  7. Weedmaps listings, compiled by Official Cannabis, Weedmaps flower menu snapshot, 27 US markets, Oct 5, 2026. Accessed Oct 5, 2026.