How to Grow Alien GG4
Alien GG4 is a potent, resin-drenched indica hybrid that pairs a sticky, sparkling bud structure with a clean, aromatic flavour. It carries a high 23–24% THC, a bright citrus, herbal and pine profile, and a soothing, happy, relaxed effect on a sturdy, generous plant that stays easy to grow.
Built from Alien Technology crossed with GG4, this is a 70% indica, 30% sativa feminized hybrid with heavyweight genetics. The result is a glittering, high-THC plant with dense, sticky buds, a crisp pine-and-herb aroma and a relaxing yet cheerful high that suits both unwinding and good company.
Recommended Strains
Alien GG
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THC | 23% - 24% (High) |
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Type | Feminized |
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Yield | High |
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Phenotype | 70% Indica / 30% Sativa |
Alien GG Regular
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THC | 22% - 24% (High) |
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Type | Regular |
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Yield | High |
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Phenotype | 70% Indica / 30% Sativa |
Because it is sturdy, productive and forgiving, Alien GG4 is a rewarding grow at any level. You can see the full genetics and buy Alien GG4 feminized seeds on the strain page, and browse more of our feminized seeds alongside it.
Strain Profile at a Glance
| THC | 23–24% (high) |
|---|---|
| Lineage | Alien Technology x GG4 |
| Type | Feminized |
| Genetics | 70% Indica / 30% Sativa |
| Climate | Temperate |
| Flowering time | 8–10 weeks |
| Harvest | October |
| Height | 4.92 ft / 1.5 m |
| Yield | Generous |
| Yield indoor | 1.31–1.97 oz/ft² (400–600 g/m²) |
| Yield outdoor | 24.69 oz/plant (700 g/plant) |
| Grow difficulty | Beginner-friendly |
| Flavors | Citrus, Herbal, Pine |
| Effects | Deeply Soothing, Happy, Relaxed |
Promos & Deals
A High-THC Indica Hybrid
Alien GG4 is a heavyweight in the best sense. With THC pushing 23–24%, it is firmly in high-THC territory, and its buds are famously sticky with resin, a trait it inherits from its sought-after GG4 parent. That potency, combined with its clean flavour, is why so many growers seek it out.
For a grower, that resin is also practical. Sticky, trichome-heavy flowers make excellent material for hash and other concentrates, and the dense bud structure translates into real weight at harvest. It is a strain that delivers on both quality and quantity without asking for expert-level care.
Climate and Where to Grow It
Alien GG4 is well suited to a temperate climate with plenty of light and good airflow. It is a vigorous, adaptable plant that performs both outdoors in a mild season and in a controlled indoor tent, reaching a medium-tall 1.5 m, so plan for a little vertical room as it stretches into bloom.
Outdoors it finishes around October, and a single plant can bring in a generous 700 g in a good spot. Indoors it produces a strong 400–600 g/m². Keep humidity in check as the dense, sticky buds fill in, since tight, resin-heavy flowers in a warm, humid room are worth protecting from bud rot.
Indoors, aim for daytime temperatures around 70–80°F (21–27°C) and keep steady airflow moving through the canopy. Its sturdy branching handles the heavy colas well, but a little support late in flower helps the plant carry all that sticky weight without bending.
Growing Feminized Photoperiod Seeds
As a feminized strain, every seed grows into a flowering female, so there is no need to sex the plants or remove males. That keeps the grow simple and means no wasted time or space on plants you would only cull later, which is part of why it is beginner-friendly.
Being a photoperiod plant, Alien GG4 flowers on a light change rather than on age. Grow it under a long day (around 18 hours of light) through the vegetative stage, then switch to a 12/12 cycle to trigger flowering. A longer veg builds a bigger frame and a bigger harvest, while a shorter veg keeps the plant more compact.
Feeding Schedule (EC Guide)
This is a vigorous, hungry plant that packs on heavy, resinous buds, so you can feed it steadily through bloom. Start low, build up as the plant asks for more, and taper off for the final flush so the clean pine and herb flavour stays bright.
| Stage | EC (mS/cm) | Notes |
|---|---|---|
| Seedling | 0.4–0.6 | Very light feed, focus on healthy root growth |
| Vegetative growth | 0.8–1.2 | Build the frame, raise nitrogen gradually |
| Early flower | 1.2–1.4 | Shift toward bloom nutrients (P and K) |
| Full flower | 1.4–1.6 | Peak bloom feed while the sticky buds swell |
| Flush | 0.0–0.4 | Plain water for the final 1–2 weeks |
Flowering and Harvest
Once you flip to 12/12, bloom runs about 8–10 weeks. As a indica-dominant hybrid it shows a short stretch early in bloom, then settles into dense, chunky, resin-coated buds that gain real weight through the second half of flowering.
Give the colas light support as they fatten, and keep the canopy open so light reaches the lower flowers. Harvest when most trichomes have turned cloudy with a few amber heads for the fullest expression, and run a short plain-water flush in the last week or two before you cut it down.
Drying and Curing
Dry whole plants or branches in a dark room at around 60°F (15–18°C) and 55–60% humidity for 7–14 days, until the thin stems snap rather than bend. A slow, even dry stops the dense, sticky buds staying damp in the middle while the outside dries out, which protects both the aroma and the heavy resin.
Then cure the trimmed buds in sealed jars, burping them daily for the first week and letting them settle for three to four weeks. A proper cure brings the piney freshness and herbal depth forward and smooths the smoke, which is exactly what this high-THC cross deserves.
What to Do With Your Trim
Don’t bin the sugar leaves you remove while manicuring. Alien GG4 is famously sticky and high in THC, so the trim is excellent for dry sift, bubble hash or rosin, giving you a bonus run of potent concentrate from material most growers would otherwise throw away.
Flavor and Terpenes
Alien GG4 has a fresh, aromatic flavour of pine and green herbs with a bright citrus top, the crisp, savoury profile you expect from this kind of resinous hybrid. It is a clean, sharp taste rather than a sweet or fruity one, and it carries straight through a careful cure.
It carries a layered terpene stack, and the ones that shape the flavour stand out clearly. Pinene drives the fresh, resinous pine note; terpinolene adds a bright, zesty lift behind the citrus; myrcene and humulene bring the earthy, herbal depth; caryophyllene folds in a gentle peppery spice; and linalool rounds it off with a soft, floral-herbal edge.
Effects and Best Use
With its indica-dominant genetics, Alien GG4 is reported as deeply soothing, happy and relaxed, a mellow body-forward character lifted by a cheerful, upbeat edge. It leans toward evening and wind-down use, but the happy side keeps it pleasant and sociable rather than purely heavy.
At a potent 23–24% THC it hits hard, so a little goes a long way, especially for less experienced users. That strength, the sticky resin, the generous yield and the clean pine-and-herb flavour are exactly why growers keep coming back to Alien GG4.
FAQ
Why is Alien GG4 also written alien gg 4?
Alien GG4 is simply the full way to write what many growers type as alien gg 4. The GG4 part points to its famous sticky, resin-heavy parent, crossed here with Alien Technology. However you spell it, it is the same high-THC, 70% indica feminized hybrid described on this page.
Is Alien GG4 indica or sativa?
It is strongly indica-leaning, at roughly 70% indica and 30% sativa, which shows in its relaxed, soothing body feel and sturdy, resin-coated structure. The small sativa share keeps the high happy and bright rather than purely heavy, so it stays pleasant and balanced across both daytime and evening use.
How long does Alien GG4 take to flower?
About 8–10 weeks once you switch to a 12/12 light cycle, with outdoor plants finishing around October. It is a photoperiod feminized strain, so it blooms on the light change rather than on age, and that window gives the dense, sticky buds time to pack on their heavy resin.
Is Alien GG4 good for beginners?
Yes. It is a forgiving, sturdy feminized plant with no males to remove, which makes it very beginner-friendly despite its high potency. Keep the canopy open for airflow and manage humidity as the sticky, resin-heavy buds fill in, and it rewards new growers with a generous, high-quality harvest.
What does Alien GG4 taste like?
Expect a fresh, aromatic mix of pine and green herbs with a bright citrus top, a clean and savoury profile rather than a sweet or fruity one. Pinene carries the pine, myrcene and humulene add the earthy, herbal depth, and terpinolene lifts the whole thing with its zesty edge.
How much does Alien GG4 yield?
It is a generous producer, giving around 400–600 g/m² indoors and up to 700 g per plant outdoors in a good spot. The heavy, resin-coated colas gain real weight late in bloom, so support the branches and keep the canopy open so light reaches every developing flower.
