Gorilla Glue

Environment

Tends to thrive in a moderately warm environment — roughly in the 72–82°F (22–28°C) range during lights-on, with a mild night-time drop. Relative humidity is best kept in the 50–60% range during vegetative growth, then dialled down toward 40–50% once flowering is established, and ideally below 45% in the final weeks when buds pack on density. Good lateral airflow is important given how thick the canopy and buds can become. VPD in the moderate range suits it; avoid prolonged high-humidity stagnant conditions.

Training & canopy

Well-suited to topping and LST early in veg to control its tendency to stretch and to open up bud sites. SCROG (screen of green) is a popular and effective choice — its lateral branching fills a screen readily and the structure lends itself to an even canopy. Topping once or twice before the flip keeps height manageable indoors. Avoid heavy defoliation all at once; thin gradually to improve airflow rather than stress the plant sharply.

Flowering

Expect a noticeable stretch in the first 2–3 weeks after flipping to 12/12 — often 50–100% height increase is possible, so flip earlier than you think you need to indoors. Weeks 1–3: rapid internodal stretch, pistils forming. Weeks 3–5: bud sites stack and swell, resin development begins. Weeks 5–7: dense bud structure sets in earnestly, trichome production ramps up significantly. Weeks 7–9: final fattening and ripening phase; monitor trichomes and watch humidity closely. Flowering typically runs in the 8–10 week window for this genotype type, though phenotypes can vary.

Difficulty

Vigorous, resinous hybrid that rewards experienced growers who can manage its stretch, feeding demands, and humidity sensitivity during late flower.