The Leaf Index
Vol. IA field guide to cannabis cultivarsleafly.cc
No. 4399Indica

Black GMO

Chem D × Girl Scout Cookies (Forum Cut)

Black Gmo is a darkly pigmented phenotype of GMO Cookies, distinguished by its striking aubergine to near-black coloration. It retains the pungent aroma and high potency characteristic of its parent strain, making it visually dramatic and powerful.

EffectsCerebral Euphoric Sedative
AromaGarlicDieselSweet Cookie DoughOnionCoffeePepper

Appearance

Black Gmo plants exhibit a medium-to-tall growth during early flowering. The most notable feature is the development of deep aubergine to near-black hues across the sugar leaves and outer calyces during the final 2-3 weeks of bloom, especially under cooler nighttime temperatures. The buds are typically large and conical, with dense trichome coverage that gives them a greasy appearance.

Aroma & Flavor

The aroma of Black Gmo closely resembles GMO Cookies, presenting a strong profile of garlic, gas, and sweet cookie dough, often with onion-like savory notes. Secondary scents can include coffee and a hint of molasses. Upon consumption, the flavor typically follows with a savory-gassy inhale, followed by sweet doughy undertones. The exhale may reveal peppery spice and roasted coffee notes.

Effects

Black Gmo is an indica-leaning hybrid known for its potent effects. Users often report a cerebral lift that can enhance creativity and euphoria, balanced by a sedative quality. The strain is generally considered to be high in THC and low in CBD.

Terpenes & Cannabinoids

Beta-caryophyllene is frequently identified as the dominant terpene in Black Gmo, often accompanied by limonene and myrcene. Secondary terpenes may include humulene, linalool, and ocimene. The cannabinoid profile is characterized by high THC levels, typically ranging from 22-30%, with CBD content usually below 1%.

Growing

Cultivating Black Gmo involves selecting phenotypes of GMO Cookies that display enhanced anthocyanin production. Growers often use temperature manipulation, particularly cooler night-time temperatures in late flower (around 15-18°C), to encourage the development of dark coloration. The plants generally exhibit a medium-to-tall stretch and produce large, conical colas with a high calyx-to-leaf ratio.

Origins & Lineage

Black Gmo is not a distinct cross but rather a specific phenotype or selected cut of GMO Cookies (also known as Garlic Cookies). GMO Cookies is widely attributed to a genetic lineage of Chem D crossed with Girl Scout Cookies, often the Forum Cut of GSC. The dark coloration is a result of anthocyanin expression, triggered by environmental factors, rather than a separate genetic donor.

Frequently asked questions

What makes Black Gmo different from GMO Cookies?
Black Gmo is a specific phenotype of GMO Cookies that exhibits unusually dark, near-black coloration due to high anthocyanin production, often triggered by cooler temperatures during late flowering. The underlying genetics and effects are otherwise the same.
What are the dominant terpenes in Black Gmo?
The dominant terpenes commonly found in Black Gmo include beta-caryophyllene, limonene, and myrcene, contributing to its peppery, citrus, and earthy aroma and flavor profiles.
Is Black Gmo a good strain for beginners?
While potent, its indica-leaning effects and potential for strong aromas might be more suitable for experienced users. Beginners may want to start with smaller doses due to its high THC content.
What conditions might Black Gmo help with?
Based on user reports and its indica-leaning profile, Black Gmo is often associated with potential relief for appetite loss, pain, and stress.