Hybrid · ILGM Genetics
Gorilla Glue #4
Gorilla Glue #4, also released as GG4 or Original Glue after the trademark dispute, is the Joesy Whales and Lone Watties cross from 2013. The cut took back-to-back Cannabis Cups in 2014 and now anchors the resin-heavy side of modern hybrid breeding. Plants finish in eight to nine weeks with thick trichome coverage that gives the strain its name — fan leaves stick to scissors during trim.
Reviewed 2026-05-23· Sources: seedfinder.eu, GG Strains history, Cannabis Cup archive
Potency
- THC range
- 24–30%
- Typical THC
- 28%
- CBD
- up to 0.1%
Flowering
- Indoor weeks
- 8–9 wk
- Difficulty
- Moderate
- Climate
- Mediterranean, warm dry
Yield & size
- Indoor
- 450-550 g/m²
- Outdoor
- 500-700 g/plant
- Height
- 120-150 cm
Indica / sativa ratio
Terpene profile
The aromatic compounds below shape how Gorilla Glue #4 smells, tastes, and ultimately feels in the body.
- dominant
Caryophyllene
Peppery and spicy — the only terpene that binds CB2 receptors, studied for anti-inflammatory action.
- secondary
Limonene
Uplifting citrus — typically associated with mood elevation and stress relief.
- secondary
Myrcene
Sedating, musky, herbal — commonly linked to couch-lock effects.
- minor
Humulene
Hoppy and earthy — appetite-suppressing and shared with hops and sage.
Reported side effects
Lineage
Gorilla Glue #4 traces to Chem's Sister × Sour Dubb × Chocolate Diesel. The cross sits in the Glue family, which influences both the terpene profile and the flowering structure described above.
Genetic family tree
Documented parents for Gorilla Glue #4 based on breeder catalogues. Library entries are clickable; ancestors not yet documented on this site appear in a lighter, non-linked box.
Strains crossed with Gorilla Glue #4
Gorilla Glue #4 is a parent of 4 strains in the broader catalogue. These are crosses that carry Gorilla Glue #4 genetics on at least one side of the cross.
Grow profile
Grow profile
- Indica / sativa
- 50% / 50%
- Flowering days
- 56–63 days
- Stretch
- Moderate
- Pest resistance
- Moderate
- Mold resistance
- Moderate
- Training methods
- topping, lst, scrog, supercropping
Feed schedule for Gorilla Glue #4
These EC and NPK targets are starting points calibrated for the strain's Hybrid lean and moderate difficulty rating — not gospel. Drop 15-20% off any EC ceiling on your first run and let the plant tell you where it actually wants to feed.
Suggested feed schedule
- Late veg
- 1.3-1.5 EC
- Early flower
- 1.4-1.6 EC, NPK 2-2-4
- Mid flower
- 1.7-1.9 EC, NPK 1-3-5
- Late flower
- 1.5-1.7 EC
- Final week
- Plain pH-balanced water for the last 7-10 days; light flush if you ran nutrients on the higher end.
Full breakdown of feed math, runoff testing, and salt buildup in our nutrient guide.
What to expect through the grow cycle
Gorilla Glue #4 is documented with a 9-week flower split across the standard hybrid phases. The visual below maps a documented 13-week cycle built from 4weeks of vegetative growth and the strain's published flowering window.
Published grow reports for Gorilla Glue #4 concentrate the most observational notes on the mid-to-late flower transition. This timeline is descriptive — it reflects what reports document, not a how-to. Actual week-to-week behaviour varies with phenotype, light intensity, pot size, and environment.
Phase details
- Veg (weeks 1-4)
- The documented vegetative period for Gorilla Glue #4. Plants establish root structure, leaf canopy, and node count before flower triggering, with a moderate difficulty rating shaping how forgiving the early canopy work tends to be.
- Stretch (weeks 5-7)
- Gorilla Glue #4 is documented as having moderate stretch. Reports describe the plant roughly doubling in height during this phase as the hybrid structure establishes its final flowering frame.
- Bud sites (weeks 8-9)
- Pre-flowers form at the nodes and calyxes begin to develop. Grow reports for Gorilla Glue #4note this as the window where the canopy's eventual bud distribution becomes visible.
- Bud development (weeks 10-11)
- Flowers thicken and calyxes fatten through this phase. Documented Gorilla Glue #4 runs show the bulk of visible flower mass accumulating here, with resin production accelerating toward the end.
- Ripening (week 12)
- Trichomes transition from clear toward cloudy and amber. Reports for Gorilla Glue #4 describe the Caryophyllene-led terpene profile maturing through this window, with aroma sharpening week over week.
- Final (week 13)
- Calyx swelling is documented as complete and the harvest window opens. Published Gorilla Glue #4 runs end here, within the 8-9 week flowering range reported by the breeder.
Flavor & aroma
Reported effects
Awards
- 2014 · High Times Cannabis Cup Los Angeles — 1st
- 2014 · High Times Cannabis Cup Michigan — 1st
Common questions about Gorilla Glue #4
Why is Gorilla Glue sometimes called GG4 or Original Glue?
The 'Gorilla Glue' name was rebranded after a 2017 trademark settlement with the Gorilla Glue Company adhesive brand. The genetics are unchanged.
Is GG4 the same in seed form?
Original GG4 is clone-only. Seed-form versions are S1 selfings or sister-line crosses, which means phenotype variation is higher than with a clone.
Breeder of record
ILGM Genetics
View breeder profile and other strains →
More from ILGM Genetics
Strains similar to Gorilla Glue #4
These picks lean on the same terpene profile and parent genetics as Gorilla Glue #4 — shared dominant terps, overlapping lineage, and matching indica/sativa lean. No star ratings or popularity contests, just overlap on the traits that actually drive a similar grow and smoke.