GG#4
Cannabis seeds
by Barney's Farm
GG#4 Auto Cannabis Seeds by Barney's Farm
GG#4 Auto is an autoflowering cannabis seed from Barney's Farm that delivers photoperiod-level yields and 25% THC in just 70 days from seed to harvest. Built on the genetics of Original Glue (formerly GG #4) crossed with BF Super Auto #1, this 55% indica hybrid puts out dense, trichome-smothered buds without the need for light schedule changes. If you've written off autoflowers as underperformers, this one will change your mind.
Pack Sizes
| Pack | Seeds | SKU |
|---|---|---|
| 3-pack | 3 feminised autoflower seeds | CSBF0128 |
| 5-pack | 5 feminised autoflower seeds | CSBF0074 |
Go with the 5-pack if you want a full SOG setup or some insurance seeds. The 3-pack works fine for a single tent run where you're dialling in your environment first.
GG#4 Auto Yield and Growing Specs
Indoor plants stay compact at around 100cm and produce up to 600g/m² — numbers that genuinely rival many photoperiod strains. Outdoors, expect heights around 130cm and yields of approximately 800g per plant. The entire cycle from germination to chop takes roughly 70 days indoors, which means you can squeeze in multiple runs per year without adjusting your light timer once.
| Specification | Detail |
|---|---|
| Seed Bank | Barney's Farm |
| Genetics | Original Glue (GG #4) x BF Super Auto #1 |
| Type | Feminised Autoflower |
| Indica / Sativa | 55% Indica / 45% Sativa |
| THC Content | 25% |
| Indoor Height | ~100cm |
| Outdoor Height | ~130cm |
| Indoor Yield | Up to 600g/m² |
| Outdoor Yield | ~800g/plant |
| Seed to Harvest | ~70 days |
| Suitable Techniques | SOG, ScrOG, main-lining, LST |
Why GG#4 Auto Seeds Stand Out
The Original Glue lineage is famous for resin production that literally makes scissors stick together during trimming — that's where the "glue" name comes from. Barney's Farm managed to pack that resin-heavy trait into an autoflowering format without sacrificing potency. At 25% THC, GG#4 Auto sits comfortably in the upper range of what's been documented across GG4 genetics. Lab reports and dispensary data for the GG4 lineage routinely show THC levels between 20–28%, with some samples testing as high as 32%.
The buds themselves are dense, compact nuggets coated in a thick layer of trichomes. Break one open and you get that classic GG4 nose: earthy and pungent with diesel fuel undertones, plus hints of pine, chocolate, and coffee. It's a robust, complex terpene profile dominated by caryophyllene — the kind of aroma that fills a room and lingers on your fingers.
As a 55% indica hybrid, GG#4 Auto produces effects that balance physical relaxation with mental stimulation. The indica side delivers that heavy, full-body calm, while the sativa genetics keep things from becoming completely couch-locked. Traditionally, GG4 varieties have been associated with relaxation and appetite stimulation by users. Common side effects reported across GG4 genetics include dry mouth and dry eyes — nothing unusual for a strain in this THC bracket.
How to Grow GG#4 Auto Seeds
Autoflowers don't need a light schedule change to trigger flowering, which makes GG#4 Auto one of the most straightforward high-THC strains you can grow. Here's how we'd approach it:
- Germinate your seeds using the paper towel method or directly in a small pot of moist, light soil. Taproots typically appear within 24–72 hours.
- Transplant seedlings into their final container early — autoflowers don't love being repotted mid-cycle. A 10–15 litre fabric pot works well indoors.
- Run your lights on an 18/6 or 20/4 schedule from start to finish. GG#4 Auto doesn't need a 12/12 flip, so more light hours means more photosynthesis and bigger yields.
- Keep the environment stable: 22–26°C during lights-on, humidity around 50–60% in veg dropping to 40–50% once buds form. These plants stay compact at 100cm indoors, so heat management in smaller tents is manageable.
- Apply low-stress training (LST) early in the vegetative phase to open up the canopy and expose lower bud sites to light. Gently bend the main stem sideways and secure it with plant ties. For more advanced growers, SOG, ScrOG, and main-lining all work with this variety.
- Feed a balanced nutrient schedule — start light and increase gradually. Autoflowers are sensitive to overfeeding, especially in the first two weeks. Switch to bloom nutrients once you see the first pistils.
- Outdoor growers can plant directly in the ground or in large pots (20–30 litres). Plants reach about 130cm and can produce around 800g per plant with good sun exposure. Pruning and LST help keep the profile low if discretion matters.
- Harvest at around day 70 from seed. Check trichomes with a jeweller's loupe — mostly milky with a few amber heads is the sweet spot for this strain's balanced effect profile.
One honest limitation: because autoflowers have a fixed vegetative period, you can't extend veg time to recover from early mistakes. If you overfeed or stress the plant in weeks 1–3, you'll see it reflected in the final yield. Get the environment right from the start and GG#4 Auto rewards you generously.
GG#4 Auto Terpene Profile and Flavour
Crack open a cured bud and the first thing that hits you is diesel — sharp, pungent, unmistakable. Underneath that, there's a rich earthiness with layers of pine resin, dark chocolate, and roasted coffee. The dominant terpene is beta-caryophyllene, which gives GG4 its signature spicy, peppery edge. It's not a subtle smell. If you're growing indoors, a carbon filter isn't optional — your entire flat will know about it otherwise.
The flavour on the exhale mirrors the nose closely. Earthy and fuel-forward with a chocolatey sweetness that rounds things out. It's the kind of profile that experienced smokers recognise immediately. If you've ever had Original Glue flower, you'll find GG#4 Auto remarkably faithful to the parent strain's character.
Complete your grow setup with a carbon filter and extraction fan to manage the intense terpene output from GG#4 Auto. A jeweller's loupe is also worth picking up for checking trichome ripeness at harvest — it's the difference between guessing and knowing your optimal chop day. If you're running a SOG or ScrOG setup, plant ties and a trellis net will help you make the most of that 600g/m² potential.
Who Should Grow GG#4 Auto
This strain works best if you want photoperiod-level results without the complexity of managing light schedules. The 70-day seed-to-harvest timeline means you can run 4–5 cycles per year indoors, stacking harvests that would take photoperiod growers twice as long. The compact 100cm indoor height makes it a solid choice for smaller tents — a 60x60 or 80x80 will handle 2–4 plants comfortably.
Compared to something like Barney's Farm Runtz Auto, GG#4 Auto leans heavier on the indica side and produces noticeably denser, more resinous buds. If you're after extraction material — rosin, hash, dry sift — the trichome coverage on GG#4 Auto makes it one of the better autoflowering candidates for that purpose. The one trade-off versus a photoperiod GG4 is that you can't clone autoflowers, so each run starts from seed.
We've been selling Barney's Farm genetics since well before autoflowers were taken seriously, and GG#4 Auto is genuinely one of the varieties that shifted our opinion on what autos can do. The combination of 25% THC, 600g/m² yields, and a 10-week turnaround is hard to argue with.
Frequently Asked Questions
How long does GG#4 Auto take from seed to harvest?
About 70 days. That's the full cycle — germination through to chop. No light schedule changes needed. Indoor growers running 18/6 or 20/4 lighting can expect to hit this timeline consistently.
What yields can I expect from GG#4 Auto indoors?
Up to 600g/m² indoors under optimised conditions. Techniques like SOG, ScrOG, or main-lining help you hit the upper end of that range. Outdoors, individual plants can produce around 800g each with good sun exposure.
What does GG#4 Auto smell and taste like?
Diesel and earth dominate the nose, backed by pine, dark chocolate, and coffee. Beta-caryophyllene is the lead terpene, giving it a spicy, peppery kick. The flavour follows the aroma closely — fuel-forward with a sweet chocolate finish.
Is GG#4 Auto suitable for small grow tents?
Yes. Indoor plants stay around 100cm tall, making them a good fit for 60x60 or 80x80 tents. Low-stress training and pruning can reduce the height further if needed. The compact structure is one of the main advantages of this autoflower.
What's the THC content of GG#4 Auto?
Barney's Farm rates GG#4 Auto at 25% THC. This aligns with broader GG4 lineage data — dispensary menus and lab reports for GG4 genetics routinely show 20–28% THC, with outlier samples reaching 32%.
Can I use training techniques on GG#4 Auto?
Absolutely. LST, SOG, ScrOG, and main-lining all work well with this strain. Start LST early in veg — autoflowers have a fixed vegetative period, so you need to shape the plant before it transitions to flower automatically.
What are common side effects associated with GG4 strains?
Dry mouth and dry eyes are the most frequently reported side effects across GG4 genetics. At 25% THC, starting with a small amount and waiting before consuming more is a sensible approach, particularly if you have lower tolerance.
What's the difference between the 3-pack and 5-pack?
Same seeds, different quantities. The 5-pack (SKU: CSBF0074) gives you room for a full SOG run or backup seeds. The 3-pack (SKU: CSBF0128) suits a single-tent grow where you want to test the strain before committing to larger numbers.
Last updated: April 2026
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Medical disclaimer. This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before use of any substance.