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The Official Cannabis collection · sheet 63No 63 · GMO Cookiesvs Chemdawg

Comparison

GMO Cookies vs Chemdawg

Chemdawg is GMO Cookies’ Chem side, specifically its D cut, which Chemdog kept from seeds he germinated in 2001.1,2 Leafly rates Chemdawg mostly energizing and GMO mostly calming, and the offspring tests higher in state labs: 26.74% median THC against 22.94% for Chemdawg.3,4,5

Side by side

GMO CookiesChemdawg
TypeIndica-dominant hybrid; mostly calming per Leafly4Hybrid; mostly energizing per Leafly3
LineageChemdawg (Chem D) × Girl Scout Cookies (Forum cut)4,6Thought to be Northern California bag seed; grown by Chemdog since 19913
Median THC (state lab tests)26.74% (2,159 tests)22.94% (668 tests)
Middle half of THC results23.46%–29.83%19.25%–25.37%
Top terpenes (median)Limonene, β-Myrcene, β-Caryophyllene (456 tests)β-Caryophyllene, Limonene, β-Myrcene (389 tests)
Leafly’s top effectsRelaxed, sleepy, euphoric4Euphoric, relaxed, tingly3
FlavorChemical, pepper, pungent4Chemical, diesel, pungent3
Flowering8–9 weeks (Leafly)47–9 weeks (Leafly)3

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

Lab-tested THC: GMO Cookies vs Chemdawg

20% 24% 28% GMO Cookies GMO Cookies: median 26.74%, middle half 23.46%–29.83%, 2,159 tests 26.7% n=2,159 Chemdawg Chemdawg: median 22.94%, middle half 19.25%–25.37%, 668 tests 22.9% n=668 Median total THC (dot) and middle half of tests (bar)
Median and middle half of total THC in state lab tests.5

The Chem D cut

Our Chemdawg count includes 54 tests labeled Chem D, the cut in GMO’s pedigree, with a median of 24.73% (middle half 23.05%–26.13%).5 Chemdawg has its own guide in the Official Cannabis network at chemdawg.com.

Which is easier to find

In Weedmaps snapshots from Oct 4, 2026 (GMO Cookies) and Oct 3, 2026 (Chemdawg), 193 stores within 50 miles of Los Angeles listed GMO Cookies flower on Weedmaps, against 79 stores for Chemdawg; around New York the counts were 93 and 39.7

More comparisons

Sources

  1. DNA Genetics, Chemdawg cannabis strain (2025-06-23). Accessed Oct 4, 2026.
  2. High Times, 25 years of Chem Dog (Danny Danko) (2016-09-07). Accessed Oct 4, 2026.
  3. Leafly, Chemdawg (aka Chemdog) 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. Weedmaps, GMO Cookies (aka Garlic Mushroom Onion) strain page. Accessed Oct 4, 2026.
  7. Weedmaps listings, compiled by Official Cannabis, Weedmaps flower menu snapshot, 27 US markets, Oct 4, 2026. Accessed Oct 4, 2026.