Fat Banana
Cannabis seeds
by Royal Queen Seeds
Fat Banana Cannabis Seeds by Royal Queen Seeds
Fat Banana is a feminised cannabis seed from Royal Queen Seeds that delivers an unusually fruity, banana-forward Kush experience backed by up to 25% THC. A cross between OG Kush and Banana, this 70% indica / 30% sativa hybrid produces one dominant main cola rather than the bushy multi-branch structure you'd expect from most indica-leaning genetics. She flowers in just 7–8 weeks and fills the room with a sweet tropical aroma that genuinely smells like a ripe banana — not a vague "fruity" marketing claim, but actual banana.
How Many Seeds Do You Need?
Fat Banana feminised seeds come in packs of 1, 3, 5, and 10. If you're running a single tent with 1m² of canopy, 3–4 plants is the sweet spot for this strain — she grows a single tall cola rather than spreading wide, so you can fit more plants per square metre than a typical indica bush. Go with the 3-pack for a first run, or the 10-pack if you want to select the best phenotype from a larger pool. We'd pick the 5-pack as the best balance between selection and value.
Fat Banana Strain Genetics and Profile
Fat Banana is a selective cross of the finest Banana OG specimens, bred by Royal Queen Seeds to push the fruity Kush archetype as far as it can go. The parent genetics — OG Kush crossed with Banana — give her that unmistakable gassy-sweet foundation, but the careful phenotype selection has amplified the banana terpene profile to something genuinely unusual. Most "fruit-named" strains barely hint at their namesake. Fat Banana actually delivers.
The 70/30 indica-sativa split shows up in her growth pattern, but not in the way you'd expect. Instead of the squat, bushy structure typical of indica hybrids, Fat Banana throws one massive central cola that can stretch surprisingly tall. Indoors she sits at 80–140cm; outdoors she can push 200cm. That single-cola dominance means she may need support — a bamboo stake or trellis net — once the flower weight starts building in weeks 5–6.
| Specification | Detail |
|---|---|
| Seed Bank | Royal Queen Seeds |
| Genetics | OG Kush x Banana |
| Type | Feminised Photoperiod |
| Indica / Sativa | 70% / 30% |
| THC Content | Up to 25% |
| Flowering Time | 7–8 weeks |
| Indoor Height | 80–140cm |
| Outdoor Height | Up to 200cm |
| Indoor Yield | Up to 400g/m² |
| Outdoor Yield | Up to 500g/plant |
| Available Packs | 1, 3, 5, or 10 seeds |
Growing Fat Banana Seeds: What to Expect
Fat Banana is straightforward to grow, but she has a couple of quirks worth knowing about before you pop your seeds. That dominant main cola is her defining feature — and her main vulnerability. Once she's deep into flower, the weight of that single bud can bend or snap the stem if you haven't staked her. We've seen growers lose their best plant in week 7 because they assumed an indica hybrid would stay short and sturdy. Don't make that mistake. Stake early.
Indoors, she responds well to SOG (Sea of Green) setups because her narrow profile lets you pack more plants per square metre. LST (Low Stress Training) also works if you want to open up the canopy and encourage some secondary bud sites, though her natural inclination is to funnel everything into that central cola. In a 1m² tent, 4 plants under a 400–600W equivalent light should get you close to the 400g/m² ceiling.
Outdoors, give her space and full sun. In ideal conditions — warm Mediterranean-style climate, rich soil, consistent feeding — she can hit 500g per plant and stretch to 200cm. She finishes flowering in 7–8 weeks, which means an outdoor harvest around late September to early October in the Northern Hemisphere. That short flowering window is a genuine advantage if you're in a region where autumn rains arrive early.
Fat Banana Aroma and Flavour Profile
This is where Fat Banana genuinely stands apart from the crowd. Crack open a cured jar and you get hit with a wave of ripe banana sweetness — not synthetic or candy-like, but closer to an actual overripe banana with a creamy, almost custard-like undertone. There's a tropical fruit basket quality underneath: mango, papaya, and a faint citrus brightness that lifts the heavier notes. The OG Kush backbone adds a subtle earthy, gassy edge on the exhale that reminds you this is still a Kush at heart.
The terpene profile is dominated by myrcene and limonene, which explains both the fruity sweetness and the slight citrus zing. If you've grown Banana OG before, imagine that flavour turned up to about 8 out of 10. The breeders at Royal Queen Seeds specifically selected for this — they weren't just chasing THC numbers, they wanted a Kush that tasted genuinely exceptional. They nailed it.
One honest note: the banana flavour is strongest in properly cured buds. Rush the dry or skip the cure, and you'll get a generic sweet-Kush taste that doesn't do justice to the genetics. Give her at least 2 weeks in jars, burping daily, and the banana really comes through.
Fat Banana Effects and THC Potency
At up to 25% THC, Fat Banana is not a casual smoke. The indica dominance delivers a deeply relaxing body effect that builds slowly and lasts a long time. The onset is gradual — you'll feel a warm heaviness settling into your limbs over the first 15–20 minutes, followed by a calm, contented headspace that doesn't race or spiral. It's the kind of effect that pins you to the sofa rather than sending you on a mental adventure.
The sativa side (30%) keeps things from becoming completely sedative. There's a gentle mental brightness in the first hour that's pleasant for music, films, or conversation — but don't expect to be productive. By hour two, the indica takes over fully. This is an evening strain. Treat it accordingly.
The honest limitation: 25% THC means even experienced smokers should respect the dosage. Fat Banana's flavour is so moreish that it's easy to keep going back for more — and then wonder why you can't get off the sofa 45 minutes later. Start with a small amount and wait. The slow onset catches people out.
Why Fat Banana Deserves a Spot in Your Grow
We've carried Royal Queen Seeds genetics since the early days, and Fat Banana is one of those strains that customers specifically come back for. The combination of genuine flavour distinction, serious potency, and a manageable 7–8 week flowering time makes her a strong choice for growers who want something that actually tastes different from the usual OG/Gelato/Cookies rotation.
The single-cola growth structure is unusual and worth experiencing. It's not the highest-yielding approach — 400g/m² is decent but not record-breaking — but the quality of what you harvest is where Fat Banana earns her reputation. Dense, resinous buds coated in trichomes, with that unmistakable banana sweetness baked into every calyx. If you're growing for personal use and flavour matters more than raw weight, she's hard to beat.
Compared to something like Royal Queen Seeds' HulkBerry (which leans sativa and delivers a more energetic, cerebral effect), Fat Banana is the opposite end of the spectrum: heavy, relaxing, and dessert-sweet. If you want a balanced collection, growing both gives you a proper range of effects and flavour profiles to work with.
How to Grow Fat Banana Seeds
- Germinate your Fat Banana seeds using the paper towel method or directly in a small pot of moist seedling soil. Taproots typically emerge within 24–72 hours.
- Transplant seedlings into their final containers once they've developed 2–3 sets of true leaves. A 15–20 litre pot works well for indoor grows.
- Maintain 18/6 light during vegetative growth. Fat Banana doesn't need a long veg period — 3–4 weeks is enough given her natural height.
- Switch to 12/12 to trigger flowering. Stake the main stem early in flower before the cola weight becomes an issue.
- Feed with a bloom-specific nutrient schedule from week 2 of flower. She's not a particularly heavy feeder, but she responds well to phosphorus and potassium during mid-flower.
- Harvest after 7–8 weeks of flowering when trichomes are mostly milky with some amber. Dry slowly in a dark room at 18–20°C and 55–60% humidity for 10–14 days.
- Cure in glass jars for a minimum of 2 weeks, burping daily. This step is critical for developing the full banana flavour profile.
Complete your Fat Banana grow with a proper setup. A grow tent, quality LED lighting, and a carbon filter will make the most of these genetics — and you'll want that carbon filter, because Fat Banana's terpene output during flower is intense enough to announce itself through walls. If you're growing in soil, a good organic nutrient kit takes the guesswork out of feeding schedules.
Frequently Asked Questions
Is Fat Banana difficult to grow?
No. Fat Banana is straightforward for growers with basic experience. The main thing to watch is her single dominant cola — stake it by week 3 of flower to prevent the stem bending under its own weight. She flowers fast at 7–8 weeks and doesn't need heavy feeding.
What does Fat Banana smell and taste like?
Ripe banana with a creamy, almost custard-like sweetness. There's a tropical fruit mix underneath — mango, papaya, light citrus — and a subtle gassy Kush edge on the exhale from the OG Kush parent. The banana flavour is strongest after a proper 2-week cure in jars.
How tall does Fat Banana grow indoors?
Expect 80–140cm indoors depending on pot size and veg time. She grows taller than most indica hybrids because of her single-cola structure. Outdoors she can reach 200cm. Keep veg time short (3–4 weeks) if height is a concern in your tent.
How much yield can I expect from Fat Banana?
Up to 400g/m² indoors under good lighting and proper nutrition. Outdoors in ideal conditions, individual plants can produce up to 500g. These are ceiling figures — your actual yield depends on light intensity, pot size, and feeding.
Is Fat Banana suitable for SOG or LST training?
Yes to both. Her narrow, single-cola growth pattern makes her a natural fit for SOG setups where you pack multiple plants per square metre. LST works too if you want to open the canopy, though she naturally prefers to channel energy into that one main bud.
How does Fat Banana compare to Banana OG?
Fat Banana is a refined selection of the best Banana OG phenotypes crossed with OG Kush. The result is a more pronounced banana flavour, higher THC (up to 25%), and a more predictable single-cola growth structure. Think of her as Banana OG with the volume turned up.
What pack sizes are available for Fat Banana seeds?
We stock packs of 1, 3, 5, and 10 feminised seeds. The 5-pack is the best balance between having enough seeds to find a strong phenotype and keeping costs sensible for a personal grow.
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.