ZZ4 Feminized Seeds – Cookies Seed Bank | Balanced Hybrid with 22% THC, Fast Flowering & High Yield

ZZ4 by Cookies Seed Bank is a powerhouse feminized hybrid that hits the sweet spot between potency, flavor, and ease of cultivation, delivering up to 450 g/m² (15.87 oz/ft²) of frosty, aromatic buds in just 8–9 weeks of flowering.

Are you still struggling with weak yields, slow flowering, or mold-prone plants?

Maybe you’ve tried other hybrids that promised big returns but ended up stretching too much, needing constant attention, or crashing in humidity. You want a strain that actually delivers—something that grows strong, finishes fast, and packs serious punch without babysitting.

What if your next grow could be low stress, high reward?

Imagine a plant that thrives whether you're growing indoors in a stealth setup or outdoors under the sun—resistant to mold, forgiving of minor mistakes, and ready to harvest in under two months. A strain that doesn’t just survive, but dominates, with thick colas coated in trichomes and a flavor that lingers like caramel on the tongue.

ZZ4 delivers exactly that—no hype, just results

This balanced 50% indica / 50% sativa hybrid from Cookies Seed Bank combines the legendary resin of GG4, the fruity sweetness of Zkittlez, and the rugged resilience of Medellin into one bulletproof strain. It’s built for real growers—whether you're tight on space, time, or experience.

Why ZZ4 outperforms your current strain

Switching to ZZ4 means upgrading to a next-level grow: compact structure for stealth, explosive yields with minimal input, and a THC level of 22% that brings euphoria followed by deep relaxation. It’s not just another hybrid—it’s a precision tool for quality and consistency.

Key features you’ll notice from the first sprout

• Flowers in just 8–9 weeks—perfect for quick turnover and multiple harvests per year
• Reaches 1–1.30 m (3.28–4.27 ft) indoors, staying manageable and ideal for SOG setups
• Produces up to 450 g/m² (15.87 oz/ft²) indoors and 550 g/plant (1.21 lb/plant) outdoors under optimal conditions
• Thrives in temperate to warm climates and shows high resistance to mold and pests
• Develops dense, resin-heavy buds with a complex aroma of earth, caramel, and citrus
• Delivers a balanced 22% THC effect—uplifting at first, then smoothly transitioning into physical calm
• Requires no advanced techniques—ideal for beginners but rewarding enough for experts

Who this strain is especially interesting for

ZZ4 is perfect for growers who want a reliable, high-performing hybrid without the fuss. Whether you're short on space, growing discreetly, or just tired of finicky plants, this strain adapts to your life—not the other way around.

• Growers looking for fast, high-yielding strains with minimal maintenance
• Users who prioritize balanced effects—mental clarity with physical relaxation
• Those in humid or unpredictable climates who need mold-resistant genetics
• Beginners wanting a forgiving yet potent strain to start with
• Experts running SOG or SCROG setups who value compact, uniform growth

How to integrate ZZ4 into your grow routine without overcomplicating things

You don’t need a PhD to grow ZZ4. Start with a quality soil or coco mix, keep your light cycle at 18/6 during veg and 12/12 in flower, and stick to a simple feeding schedule. Use feminized seeds from top breeders for consistency, and consider adding HESI Hydro Growth in early vegetation to boost root development and structural strength. No aggressive pruning needed—just train lightly with LST if desired.

Technical specifications

• Breeder / Brand: Cookies Seed Bank
• Type: Feminized
• Dominance: Hybrid (50% indica / 50% sativa)
• Genetics: GG4 × Zkittlez × Medellin
• Flowering time (indoor): 8–9 weeks
• Harvest (outdoor): Late September to mid-October (Northern Hemisphere)
• Indoor yield: 400–450 g/m² (14.11–15.87 oz/ft²)
• Outdoor yield: 450–550 g/plant (1.00–1.21 lb/plant)
• Indoor height: 1–1.30 m (3.28–4.27 ft)
• Outdoor height: 1.60–2 m (5.25–6.56 ft)
• Difficulty: Low to medium
• Structure: Compact, dense branching, short internodal spacing
• Climate: Temperate, warm; adaptable to cooler conditions
• Resistance: High resistance to mold, pests, and environmental stress
• Training: Suitable for LST, topping, SCROG; avoid aggressive pruning
• Recommended pot: 7–11 L during veg, final pot 11–18 L depending on space
• Light: 18/6 veg, 12/12 flower
• Temperature: 22–26 °C veg, 20–25 °C flower
• Humidity: 60–70% seedling, 50–60% veg, 40–50% flower
• pH: 6.0–6.5 (soil), 5.8–6.2 (coco/hydro)
• Smell in grow: High – use carbon filter if needed
• THC: 22%
• CBD: ~0%
• Aromatic profile: Earthy, sweet, fruity, caramel, citrus
• Flavour: Rich caramel with fruity Zkittlez notes and earthy GG4 depth
• Effect: Euphoric, relaxing, balanced – ideal for daytime or evening use

How to grow ZZ4 for maximum results

ZZ4 is a low-maintenance powerhouse, but a few smart moves can push your yields and quality even further.

Safe start: Germinate in a moist paper towel or rapid rooter at 22–25 °C and high humidity. Transplant carefully once the taproot is ~1 cm long.

• Use a well-aerated substrate like coco or light soil
• Keep humidity at 60–70% during germination
• Apply Bio-stimulator Growth Booster Max Green Hope to accelerate root development
• Avoid overwatering seedlings—let the top layer dry slightly
• Place under low-intensity light (T5 or LED) at 25–30 cm (10 in) distance

Directed growth: Maintain 18/6 light cycle and stable climate. ZZ4 grows compact and uniform, perfect for dense setups.

• Use 7 L pots for SOG, 11–18 L for larger plants
• Train gently with LST to expose lower nodes
• Feed with balanced nutrients—avoid excess nitrogen
• Ensure good airflow to prevent humidity buildup
• Monitor pH and EC regularly to prevent nutrient lockout

Efficient flowering: Switch to 12/12 light cycle. ZZ4 shows rapid bud formation with minimal stretch.

• Lower humidity to 40–50% to protect dense buds
• Support branches if needed—colas get heavy
• Use bloom boosters like Top Candy during mid-flower for resin and density
• Watch trichomes: harvest when milky with slight amber for balanced effect
• Flush 7–10 days before harvest for smoother smoke

Frequently Asked Questions

Is ZZ4 suitable for beginners?

Yes, ZZ4 is beginner-friendly thanks to its high resistance to pests and mold, forgiving nature, and straightforward growth pattern. Just follow basic watering and feeding guidelines, and you’ll be rewarded with quality buds.

How tall does ZZ4 get outdoors?

Outdoors, ZZ4 can reach 1.60–2 m (5.25–6.56 ft) in warm, sunny conditions. It performs best in large pots (50 L) with plenty of light and good drainage.

Does ZZ4 have a strong smell during flowering?

Yes, ZZ4 has a high smell intensity—earthy, sweet, and fruity. If discretion is key, use a carbon filter in your grow room to control odors.

Can I grow ZZ4 in a small indoor space?

Absolutely. With a height of 1–1.30 m (3.28–4.27 ft) and compact structure, ZZ4 is ideal for small tents or stealth grows. Use 9 plants per m² in 7 L pots for SOG, or 4–6 in larger containers.

What’s the best way to maximize ZZ4’s yield?

Use low-stress training (LST), maintain optimal climate and nutrition, and add a flowering booster like Top Candy. Avoid over-pruning—ZZ4 rewards gentle handling with dense, resinous colas.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown a lot of Cookies strains, but ZZ4 stands out. I used to run more sativa-dominant hybrids that stretched like crazy and took forever to finish. With ZZ4, I got the same potency and flavor—but in half the time and half the height. I ran 12 plants in 11 L pots under a 600W LED, and by week 9, the room smelled like a candy store mixed with diesel. The buds were rock hard, frosty as hell, and tested at 22% THC. I’d recommend this to anyone who wants a no-drama, high-reward grow—especially if you’re tight on space or time. It’s become my go-to for quick, quality harvests.