Thunder Banana Feminized Cannabis Seeds by Seed Stockers – Sweet Banana Flavor & High THC (20-26%)

Thunder Banana feminized seeds by Seed Stockers give you a rare combo: intense banana flavor, sky-high THC (20–26%), and beginner-friendly growth that delivers huge yields both indoors and out.

Stuck in a rut with bland, forgettable strains that barely get you going? You’re not alone. Most genetics offer the same earthy notes and mild buzz — nothing that truly excites or elevates your experience. And if you're new to growing, the fear of failure can keep you from even trying.

That hesitation costs you more than just time. It means missing out on rich, fruity flavors, powerful cerebral highs, and the pride of harvesting your own top-shelf buds. Worse, it keeps you dependent on inconsistent dispensary products or weak homegrown crops that don’t live up to the hype.

Thunder Banana changes the game. Bred from Alaskan Thunder Fuck and Amherst Banana, this sativa-dominant hybrid delivers sweet, candy-like banana taste with subtle skunk and herbal notes — a flavor profile that stands out in any stash. With THC levels hitting up to 26%, it offers a fast-acting, long-lasting euphoric high that sparks creativity and keeps the vibe light and happy. And thanks to its stable genetics, even first-time growers can harvest massive colas in just 9 weeks of flowering.

Perfect for home growers who want big flavor and big yields

Whether you're setting up your first grow tent or expanding your garden, Thunder Banana shines in controlled indoor environments. Its compact structure and strong branching support heavy colas without constant staking. Under 600W HPS or full-spectrum LEDs, you’ll see yields of up to 600 g/m² (2.12 oz/ft²) after an 11-week flowering cycle. The buds pack tight with resin, glowing under UV light and filling the room with a sweet, tropical aroma that’s hard to miss — so consider a carbon filter if discretion is key.

For best results, keep your climate steady: 22–26 °C (71.6–78.8 °F) and 50–60% RH during veg, dropping to 20–25 °C (68–77 °F) and 40–50% RH in flowering. Use well-aerated soil or coco with a pH of 6.0–6.5, and avoid overwatering — this strain forgives small mistakes but thrives with consistent care. For a stronger start, SeedBooster Plus germination stimulator boosts root development and speeds up sprouting.

Just as strong when grown outdoors in warm climates

Plant Thunder Banana in your garden or balcony and watch it stretch into a towering sativa specimen, reaching up to 1.80 m (5.91 ft) in ideal Mediterranean or temperate conditions. It loves long, sunny summers and rewards you with monster harvests of over 1000 g/plant (35.27 oz) by late October or early November. Its resistance to mold and pests makes it a reliable choice for outdoor grows, even in slightly humid areas — just ensure good airflow between plants to prevent moisture buildup.

Start early in spring to maximize growth, and consider low-stress training (LST) to expose more bud sites to sunlight. Avoid aggressive pruning, especially topping, as it can stress the plant and reduce yields. For sustained growth, Soil Nutrition A+B provides balanced feeding without nutrient burn, keeping leaves green and photosynthesis strong.

How to choose the best setup for your growing style

Thunder Banana adapts to your lifestyle, whether you're a stealthy indoor grower or a sun-chasing outdoor cultivator. The key is matching your space, climate, and experience level to the right approach.

• If you value control and discretion, indoor growing gives you consistent results year-round
• If you love natural sunlight and big plants, outdoor cultivation maximizes yield and potency
• If you're short on time, its 9-week flowering cycle makes it ideal for quick turnover
• If you're new to growing, its forgiving nature and high resistance reduce stress and failure
• If you want maximum flavor, an extra few days in late bloom enhances terpene development

Benefits that stay strong in every grow environment

• Massive yields — up to 600 g/m² indoors or 1000+ g/plant outdoors
• Sweet banana flavor with skunky depth — a standout in any rotation
• High THC (20–26%) for a powerful, uplifting cerebral effect
• Beginner-friendly growth with stable, resilient genetics
• Fast flowering — ready in just 11 weeks from photoperiod switch
• Dense, resinous buds that look and taste premium
• Sativa-driven energy perfect for daytime creativity and social vibes

Technical specifications

• Breeder / Brand: Seed Stockers
• Type: Feminized
• Dominance: Sativa-dominant hybrid (~60% sativa)
• Genetics: Alaskan Thunder Fuck × Amherst Banana (Amherst Sour Diesel × Banana OG)
• Indoor flowering: 10–14 weeks (average 11 weeks)
• Outdoor harvest: Late October to early November (Northern Hemisphere)
• Indoor yield: 500–600 g/m² (1.76–2.12 oz/ft²)
• Outdoor yield: Over 1000 g/plant (35.27+ oz)
• Indoor height: 80–110 cm (2.62–3.61 ft)
• Outdoor height: Up to 1.80 m (5.91 ft)
• Difficulty: Low (beginner-friendly)
• Structure: Strong branching, medium internodal spacing, moderate stretch
• Climate: Temperate, Mediterranean, continental; tolerates heat well
• Resistance: Moderate resistance to mold and pests
• Training: Suitable for LST and SCROG; avoid aggressive pruning
• Substrate: Soil or coco; prefers well-aerated, light mix
• Light cycle: 18/6 in veg, 12/12 in flowering
• Temperature: 22–26 °C (71.6–78.8 °F) veg; 20–25 °C (68–77 °F) flower
• Humidity: 50–60% veg; 40–50% flower
• pH: 6.0–6.5 (soil), 5.8–6.2 (coco/hydro)
• THC: 20–26%
• Flavor: Sweet banana, candy, herbal, skunk
• Aroma in grow: High — use carbon filter if needed
• Effect: Cerebral, uplifting, happy, creative — ideal for daytime

Frequently Asked Questions

Is Thunder Banana good for beginners?

Yes, it’s very beginner-friendly. It’s resistant to common issues, adapts well to different environments, and doesn’t require advanced techniques to produce high yields.

How long does Thunder Banana take to flower?

Indoors, flowering lasts 10–14 weeks, typically around 11 weeks. Outdoors, it’s ready by late October to early November in the Northern Hemisphere.

What does Thunder Banana taste like?

It has a dominant sweet banana flavor with candy-like sweetness, backed by herbal and subtle skunk notes — a unique and memorable profile.

Can I grow Thunder Banana outdoors?

Absolutely. It thrives outdoors in warm, sunny climates and can produce over 1000 g/plant with proper care and sunlight.

Does Thunder Banana need a lot of nutrients?

No, it’s moderate in nutrient demand. Stick to a balanced feeding schedule and avoid overfeeding, especially in flowering, to prevent nutrient burn.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown Thunder Banana in both my indoor tent and on my rooftop garden, and it’s become one of my go-to strains for reliable performance and standout flavor. Indoors, I run it under full-spectrum LEDs with 18/6 lighting, and I’m consistently impressed by how fast it develops dense, resin-heavy colas. I let it flower for the full 11 weeks — that extra time really deepens the banana terpenes and boosts potency.

Outdoors, it’s a beast — I’ve seen plants hit over 1.70 m (5.58 ft) with massive lateral branching. I use LST early to open up the canopy, and I always add Brutal Buds in mid-flowering to push resin and density. The high is super clear and energizing, perfect for weekend creativity or chilling with friends. If you want a strain that delivers big flavor, big yields, and big vibes without the hassle, Thunder Banana is it.