Gorilla Glue #4 Auto Seeds

Gorilla Glue #4 Auto Seeds: The Sticky-Fingered Champion (9–10 Week Sprint)

If you’re looking to buy autoflowering Gorilla Glue #4 seeds in Australia, read this like a checklist, not a love letter. GG4 Auto is the award-winning Glue energy in a faster body — resin-heavy, loud, and brutally efficient. She’ll give you that shiny first-act lift, then she’ll glue your plans to the couch… but only if your system stays calm. Autos don’t negotiate, and Glue autos definitely don’t.

Matty’s Cheat Sheet (GG4 Auto)

• pH bullseye: Soil 6.2 (safe 6.0–6.6) • Coco/Hydro 5.8 (safe 5.7–6.1)
• Timeline: 9–10 weeks seed to harvest (most runs land Day 63–75)
• Difficulty: Moderate — easy if you’re steady, punishing if you “fix” things every day

Quick Stats

Gorilla Glue #4 Auto is a hybrid autoflower that typically runs ~20–25% THC and finishes in a 9–10 week seed-to-harvest sprint. Indoors, expect roughly 400–500 g/m² with a clean canopy and stable inputs; outdoors, plan for 100–250 g/plant in warm, sunny spots. In Australia, outdoor finishes often land around late March–April depending on region and start date.

Matty: “Start her in the final pot, keep the airflow cranking, and don’t feed like you’re trying to impress someone. GG4 Auto rewards steady hands.”

The Legend

Gorilla Glue #4 (GG4) is a three-way genetic masterpiece: Chem’s Sister × Sour Dubb × Chocolate Diesel. She shot to fame with major wins in 2014 (including Cannabis Cup events) and kept the momentum rolling into 2015. The “Glue” name stuck for two reasons growers never forget: resin that gums up fingers and scissors, and a high that turns furniture into a contract.

Flavour & Aroma

On the nose: Rich earth and fresh pine with a sharp diesel edge — like a mechanic’s bay parked in a pine forest.

On the tongue: Diesel-forward and earthy, with nutty/chocolate flickers and a punchy finish that lingers.

Matty: “Bit of cocoa peeking through the fuel. Proper in-your-face funk.”

Effects & What to Expect

• First wave: A bright cerebral lift — ideas feel shinier, music sounds fatter, and you’ll suddenly want to reorganise something.
• Then the glue sets: Deep physical calm rolls in and the couch starts feeling magnetic. Ideal for evenings when the to-do list is done and the snacks are already lined up.

How I Grow It (Matty’s Way)

Skill level: Moderate. This one’s not “hard” — it’s just honest. Keep the environment stable, keep your inputs consistent, and avoid emotional corrections.

The Auto Rule: Final Pot, Gentle Hands

Start her in the final pot and keep training light. Autos don’t love resets. I do gentle LST only (early), opening the canopy so more sites see more light.

The Bullseye pH Strategy (This Is the Unlock)

Yes, she’ll survive inside the safe zone — but the heavy resin and clean stacking show up when you hit the bullseye.

• Soil: Aim for pH 6.2 (safe 6.0–6.6)
• Coco/Hydro: Aim for pH 5.8 (safe 5.7–6.1)

Why so fussy? GG4-style plants can get touchy with micronutrient uptake when pH drifts, and when that happens the plant starts “talking” in weird symptoms that look like hunger. Hit the bullseye and she stacks clean instead of arguing with you.

Feeding: Stable & Not Too Hot

Autos usually hate heavy EC. I’d rather be slightly under than even a touch hot.

• Early flower: ramp gently from about 1.2–1.3 EC
• Mid flower: most runs shine around 1.5–1.8 EC
• Upper ceiling (many plants): ≤1.8 EC keeps tips happy and buds dense

The Day 21 / Day 42 Tidy (Kill the “Sweat Zones”)

This is the single best mould-prevention move for dense Glue buds:

• Day 21: clear the bottom ~10% of growth and any leaves that sit pressed against other leaves — those contact points become “sweat zones.”
• Day 42: a light second tidy — remove shaded junk and anything blocking airflow through the middle.

Glue doesn’t usually fail because of nutrients. She fails because airflow wasn’t treated like part of the feed schedule.

Environment Targets (Where Density Is Made)

• Late flower VPD: aim 1.2–1.4 kPa
• RH: ~45–55% early bloom, easing to 40–45% late
• Airflow: you want a cross-breeze through the canopy (not just blowing over the tops)

Matty’s Advanced Notes (For the Nerds in the Room) 🔬

• Reservoir temps (hydro): 18–20 °C with strong dissolved oxygen.
• pH (hydro): I keep it hovering around 5.8–6.0 once flower is properly underway.
• EC in bloom (coco/hydro): sweet spot ~1.5–2.0, but many runs are best ≤1.8. Watch tips, not ego.
• Airflow detail: rotate fan angles as plants fill out so you don’t create dead pockets behind colas.
• ⚠️ Red Flag: If RH sits >55% for long stretches in mid-flower, you’re inviting botrytis in dense clusters.

Matty note: “If it feels too airy, you’re probably doing it right.”

The Autumn Finish (Optional: Purple/Plum Fade for Contrast)

GG4 Auto is famous for silver-white frost — but if you want that premium shelf contrast, you can encourage an autumn fade in the final stretch. This is a polish move, not a requirement.

• Final 10 days: drop lights-off temps by about 5–7°C (don’t shock it, step it down).
• Rule: only do this if the plant is healthy and the canopy is already breathing properly.

The goal isn’t “purple for potency” — it’s visual contrast: darkened leaf tones behind bright trichomes.

Grow Log: Inside the Tent 📅

Matty’s Warning: “She frosts up like a bakery freezer door — dense buds mean airflow is non-negotiable. A decent fan is cheaper than losing a cola to botrytis.”

Phase / Week	Key Action	Matty’s Tip
Veg Week 3	Tight node stacking; bushy structure forming	Start gentle LST now. Open the canopy early so she never has to “recover.”
Flower Week 4	Stretch slows; bud sites stacking; resin starts showing	Hold the pH bullseye and keep EC sensible — this is where clean stacking gets decided.
Flower Week 7	Colas get heavy; aroma ramps hard	Re-check “sweat zones.” Airflow through the middle matters more than another feed tweak.
Harvest Week	Rock-solid, sugar-dusted colas	Plain water 7–10 days if your medium allows, then slow dry for flavour. Glue terps punish impatience.

Mythbusting

• Myth: “Autos can’t handle training.”
  Truth (Matty): Gentle, early LST is perfect — more light on more sites = better yield.
• Myth: “Autos need massive EC to stack weight.”
  Truth (Matty): Too hot backfires. GG4 autos often shine at ≤1.8 EC with stable feeds.
• Myth: “Auto highs are short and weak.”
  Truth (Matty): GG4 Auto hits hard — bright first act, heavy finish, plenty of stay-time.

Who It’s For?

Perfect If You:

• Want fast, reliable runs without flipping light schedules.
• Love dense, resin-caked buds and that famous Glue finish.
• Prefer an evening vibe that lifts first, then settles you properly.

Maybe Not For You If You:

• Need ultra-zippy daytime-only strains.
• Prefer long-veg, high-training photoperiod projects.
• Can’t keep humidity and airflow consistent in late flower.

Field Report: When GG4 Auto Lies to You

I saw a run where the grower kept “feeding the yellow” because the leaves looked hungry — but the runoff was drifting high and the plant was actually locked out. We pulled it back to the bullseye (soil 6.2 / coco 5.8), stopped the panic feeding, and within days the plant stabilised and kept stacking. GG4 doesn’t need heroic fixes — it needs you to stop swinging the basics.

Final Verdict

Gorilla Glue #4 Auto is famous for one reason: it delivers when your system is calm. Expect heavy frost, chunky colas, and a high that decides the evening for you — bright at first, then properly glued. Treat airflow like part of the nutrient schedule, hit the pH bullseye, and don’t cook the finish. You’ll pull jars so sticky they squeak when you crack them.

Matty’s final word: “Don’t fight the glue — line up the snacks and enjoy the stuck.”

We Answer Your Questions (Q&A with Matty)