Gorilla Glue #4 Fast Feminized Seeds – Heavy Resin, Fast Finish

There are strains you grow once and forget. Then there's Gorilla Glue #4. This one sticks with you — and not just because of the resin. GG4 became one of the most talked-about cultivars in North America for good reason: it delivers a genuinely powerful, full-body experience backed by trichome production that makes harvest day look like a winter scene. Our fast feminized version takes everything that made the original legendary and compresses the timeline without cutting corners on quality.

With a seed-to-harvest window of just 8-9 weeks and THC levels running between 18-25%, this is a strain built for growers who want serious results without watching the calendar for months. Whether you're running a tight indoor cycle in a Toronto apartment or working with a short outdoor season in Alberta, the fast-flowering genetics here give you real flexibility. It's an indica-dominant hybrid that leans hard into relaxation and euphoria, and the pine-diesel aroma it throws off during late flower is something you'll either love immediately or learn to love fast.

What strains make up Gorilla Glue #4 Fast Feminized?

Gorilla Glue #4 Fast Feminized is bred from a three-way cross of Sour Dubb, Chocolate Diesel, and GG4 Auto genetics. This combination brings together the resin-heavy, euphoric backbone of the original GG4 lineage with the accelerated flowering traits of the autoflowering parent — giving you a feminized fast-photoperiod plant that finishes weeks ahead of a standard photoperiod version.

Sour Dubb is the foundation of a lot of what makes GG4 special. It's a sativa-leaning hybrid known for its complex, fuel-forward terpene profile and its tendency to produce dense, sticky flower. When you smell that sharp, almost chemical diesel note underneath the pine in GG4, that's Sour Dubb's influence coming through. Chocolate Diesel adds depth to the aroma — a subtle earthiness and a slight sweetness that rounds out what would otherwise be a very sharp-edged smell. It also contributes to the vigorous growth structure that GG4 is known for.

The GG4 Auto parent is what makes this version 'fast.' By introducing autoflowering genetics into the cross, breeders were able to select for plants that trigger flowering earlier and finish faster while retaining the feminized, photoperiod-responsive nature of the plant. You still control the light cycle — this isn't an autoflower — but the plant is genetically primed to move through flower quickly once triggered. In our grows, we've seen this pheno stretch noticeably in the first two weeks of flower before locking in and stacking resin aggressively through weeks four to seven. It's a satisfying plant to watch develop. Pair it with fast feminized seeds if you're building a rotation that needs consistent, quick turnarounds.

What does Gorilla Glue #4 Fast Feminized smell and taste like?

Gorilla Glue #4 Fast Feminized is a pungent, earthy strain with a dominant pine and diesel aroma. The smell builds steadily through flower and hits its peak in the final two weeks before harvest — your neighbours might start asking questions. On the exhale, expect a thick, fuel-forward flavour with resinous pine and a faint chocolate-earth undertone.

The terpene profile here is led by caryophyllene and myrcene, two of the most well-studied cannabinoid-adjacent compounds in cannabis. Caryophyllene is a spicy, peppery terpene that also acts as a dietary cannabinoid by binding to CB2 receptors — it's associated with anti-inflammatory and stress-relieving properties. Myrcene is the most abundant terpene in most cannabis cultivars and is strongly associated with the sedative, body-heavy effects that indica-leaning strains are known for. Together, these two terpenes create a profile that smells earthy and sharp but feels deeply relaxing in the body.

On the effects side, GG4 Fast Feminized is a full-spectrum hybrid experience. The onset is cerebral — a wave of euphoria and mental clarity that arrives quickly given the 18-25% THC range — before settling into a heavy, couch-friendly body effect that's characteristic of the indica side of the cross. This is not a strain you smoke before a productive afternoon. It's an evening strain, a wind-down strain, the kind of thing you reach for when you genuinely want to stop thinking for a while. CBD levels are low (0-1%), so the experience is THC-forward with minimal counterbalancing sedation from CBD.

How difficult is Gorilla Glue #4 Fast Feminized to grow?

Gorilla Glue #4 Fast Feminized is a moderately straightforward strain for growers with at least one or two cycles under their belt. It's vigorous, responds well to training, and doesn't require obsessive attention — but it does reward growers who dial in their environment, particularly humidity management in late flower when the dense buds become susceptible to moisture issues.

This is a feminized, photoperiod-responsive plant, which means you control the flip to flower by switching your light schedule to 12/12 indoors. Outdoors, it follows the natural light cycle and suits temperate and Mediterranean climates well — think the Okanagan Valley in BC or the warmer pockets of Southern Ontario during a long summer. The fast-flowering genetics mean it can finish ahead of the first frost in regions where a standard photoperiod GG4 would be cutting it close.

Indoors, this strain performs best in a structured environment. It has a moderate stretch during the first two weeks of flower — typically 50-75% of its vegetative height — so factor that into your canopy planning before you flip. We've run this strain in both soil and coco and found that coco with a well-managed nutrient schedule pushes yields noticeably higher, though soil grows tend to produce a slightly richer terpene expression during cure. Either medium works; it comes down to what you're optimising for.

The resin production on this cultivar is exceptional even by GG4 standards. By week six of flower, the trichome coverage on the sugar leaves rivals what you'd see on the buds themselves. This makes it an excellent candidate for hash and extract production alongside a flower harvest. Growers running high THC feminized seeds alongside this strain will find GG4 Fast Feminized holds its own at the top of the potency range. Keep your scissors close at harvest — the name isn't just marketing.

How long does Gorilla Glue #4 Fast Feminized take to flower and what yields can you expect?

Gorilla Glue #4 Fast Feminized flowers in 45-50 days (approximately 8-9 weeks) from the flip to 12/12 lighting. This is genuinely fast for a strain with this level of resin and potency — most photoperiod GG4 expressions run 9-11 weeks, so the time savings here are real and meaningful for growers running multiple cycles per year.

Seed to harvest sits at 8-9 weeks total once you account for the flowering period, making this one of the more efficient high-THC photoperiod strains available. Yields are generous when the plant is given adequate light intensity and a dialled-in nutrient program through the mid-to-late flower push. Indoor growers running 600W HPS or equivalent LED setups can expect solid returns per square metre; outdoor plants in a warm, sunny season will bulk up considerably given the vigorous growth structure inherited from the Chocolate Diesel and Sour Dubb parents.

In our grows, we've consistently seen the heaviest resin accumulation between days 35 and 45 of flower. Trichomes shift from clear to cloudy rapidly in this window, and the amber transition follows quickly — this is a strain that tells you when it's ready if you're watching closely with a loupe. Don't let it go too long; the peak window is real and worth hitting precisely.

What are the best growing tips for Gorilla Glue #4 Fast Feminized?

Getting the most out of GG4 Fast Feminized comes down to a few key decisions made early in the grow. Here's what we've learned across multiple runs with this cultivar.

1. Train early and aggressively in veg. This strain responds exceptionally well to low-stress training (LST) and topping. Because it stretches during the first two weeks of flower, building a wide, flat canopy in veg pays dividends. We typically top once at the fifth node and then LST the main branches outward to create an even canopy before flipping. This maximises light penetration and produces a more uniform bud development across the plant.

2. Manage humidity hard in late flower. Dense GG4 buds are beautiful but they hold moisture. Keep relative humidity below 45% from week five of flower onward. If you're growing in a humid climate — coastal BC in late summer, for instance — a dehumidifier in your tent or room is not optional with this strain. Botrytis (bud rot) is the main risk, and the fast-flowering timeline means you don't have time to recover from a mould issue.

3. Push nitrogen early, back off at the flip. GG4 Fast Feminized is a hungry plant in veg and early flower. We run a moderate-to-high nitrogen feed through the vegetative stage and the first week of flower, then transition to a phosphorus and potassium-heavy bloom feed from week two of flower onward. Flushing the final 10-14 days before harvest noticeably improves the smoke quality and terpene expression.

4. Watch the trichomes, not the calendar. The 45-50 day flowering window is a guideline, not a guarantee. Environmental variables — temperature, light intensity, VPD — all affect the pace. Use a jeweller's loupe or digital microscope from day 35 onward and harvest when you see 70-80% cloudy trichomes with the first signs of amber appearing. This is the sweet spot for the balanced euphoric-body effect GG4 is known for.

5. Cure properly. This strain's terpene profile — that pine-diesel complexity — only fully develops during a proper cure. Dry slowly at 60-65°F and 55-60% RH for 10-14 days, then jar-cure for a minimum of two weeks with daily burping. Rushing the cure on GG4 is the single most common mistake growers make with this cultivar. The difference between a two-week cure and a four-week cure is genuinely significant. Explore cannabis curing and drying techniques to get the most from your harvest.

Gorilla Glue #4 Fast Feminized is the kind of strain that earns its reputation every single grow. The combination of a compressed 8-9 week seed-to-harvest window, 18-25% THC, and that unmistakable pine-diesel terpene profile makes it one of the most well-rounded options in the PPS catalogue for growers who want potency, speed, and character in the same package.

It's not a beginner strain — the humidity management demands and the importance of hitting the harvest window precisely mean it rewards growers who pay attention. But it's also not a diva. Give it good light, a solid nutrient program, and proper airflow, and it will deliver. The resin production alone makes it worth running at least once; most growers who do end up running it again.

If you're building out a grow rotation and want a high-THC photoperiod strain that doesn't ask you to wait three months, GG4 Fast Feminized belongs in the lineup. Browse our full range of feminized cannabis seeds Canada to find the right companions for your next cycle.