title: "G13 - Effects, Terpenes & Queens Availability | Terp Bros NYC" description: "G13 strain: indica-leaning, 20-24% THC, myrcene-led. See current G13 stock on the live Terp Bros NYC menu. Lab-tested under NY OCM rules, Queens delivery. 21+." strain_type: "indica" thc_range: "20-24%" cbd_range: "<1%" dominant_terpenes: ["myrcene", "caryophyllene", "pinene"] parent_strains: ["Unknown landrace indica (rumored Afghani lineage)"] flowering_time: "8-9 weeks" date: "2026-05-23"
G13 is an indica-leaning strain at 20-24% THC, with a sweet earth, sandalwood and light pine nose over a myrcene, caryophyllene and pinene stack. Onset is 3-4 minutes, and the effect is described as a classic heavy stone. It is a deep evening strain with a rumored origin at a US government research facility in Mississippi.
The Rumor and the Plant
The G13 origin story is a rumored US government research facility in Mississippi in the 1960s and 70s, with a plant later released to the underground by an unnamed grower. Treat that as folklore, because the listed parent is an unknown landrace indica of rumored Afghani lineage.
What can be said without the legend is the plant. It flowers in 8-9 weeks and tests at 20-24% THC with under 1% CBD.
A Classic Heavy Stone
Onset is 3-4 minutes, and the reported effect is a classic heavy stone. The listed use cases are a deep evening and the heaviest session. Duration runs 2 to 4 hours when inhaled and longer after an edible.
Myrcene, Caryophyllene and Pinene
Myrcene
G13 leads with myrcene, body-relaxing and heavy, the classic indica-feel profile.
Caryophyllene
Caryophyllene is second, peppery, warm and grounding on the body, while the nose itself reads sweet earth and sandalwood.
Pinene
Pinene contributes a fresh, pine-like aroma, which fits the light pine on the back of the nose.
Blackberry Kush, Granddaddy Purple, Romulan and Mendocino Purps
Blackberry Kush shares the myrcene, caryophyllene and pinene order but smells of ripe blackberry and sweet diesel at 16-20% THC. Granddaddy Purple lists grape candy, sweet berry and lavender at 17-23% THC. Romulan is the closest in strength at 20-25% THC, with a sweet pine and hash profile. Mendocino Purps leans to grape and berry with earthy pine.