Fertilising guide
How to fertilise Blood Banana (Musa acuminata 'Zebrina')— schedule & NPK
Also called Blood banana, Red banana, Zebrina banana, Zebrina Rojo banana, Blood-leaf banana, Musa zebrina.
More about blood banana
About Blood Banana
Musa acuminata 'Zebrina' · also called Blood banana, Red banana · tropical
The blood banana (Musa acuminata 'Zebrina') is an ornamental tropical grown for its burgundy-splashed paddle leaves, kept as a houseplant or patio specimen outside frost-free zones. Per the ASPCA, banana (Musa acuminata) is non-toxic to dogs, cats and horses, so this cultivar is considered pet-safe. It loves heat, bright light and steady moisture.
Growth habit: Fast-growing evergreen perennial forming an upright pseudostem (a sheath of leaf bases) topped with large, paddle-shaped leaves splashed and barred in deep maroon to burgundy, fading toward green as they age. The clump slowly widens via short rhizomes that throw up offset pups around the base.
Watch for — Stalled growth and pale leaves: Usually a sign of cold temperatures, too little light, or insufficient feeding during the growing season.
What fertiliser blood banana actually wants — and why
Blood Banana is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.
A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula.
For the language behind the three numbers on the bottle — what nitrogen, phosphorus and potassium each do — see the NPK ratio explained entry. The short version for blood banana: match the feed to the job the plant is doing right now, not to a generic “plant food” on the shelf.
How often to feed blood banana, and which months
Feeding only earns its keep while the plant is in active growth and can use the nutrients — pour feed into a dormant or low-light plant and it simply builds up as root-burning salt. For blood banana:
Feed generously during the growing season (spring through early autumn) — bananas are hungry plants. Apply a balanced liquid feed every 1-2 weeks, or a high-potassium feed to support lush foliage. Stop feeding in winter while growth is slow. Repot every 1-2 years in spring into fresh, rich compost. Treat that as every 1-2 weeks between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.
The dormant-season rule matters more than the exact interval: skip feeding entirely when blood banana is resting. For the wider context on indoor feeding rhythms across the seasons, the houseplant fertiliser schedule walks through the year month by month.
What strength to mix for blood banana
Half strength is the safe default for blood banana — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
Feeding always goes onto already-damp soil, never dry roots — water blood banana first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the blood banana watering schedule.
Signs you are over-feeding blood banana
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for blood banana:
- Brown, crispy leaf tips and edges with no sign of underwatering.
- A white, crusty salt deposit on the soil surface or pot rim.
- Weak, pale, stretched new growth that flops.
- Lower leaves yellow and drop while the soil is correctly watered.
Signs you are under-feeding blood banana
- Uniformly pale or yellow-green leaves, oldest first.
- Noticeably small new leaves and stalled growth in good light and season.
- A generally tired, lacklustre look despite correct watering and light.
If the symptoms point at watering, light or roots rather than nutrition, the full blood banana care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of blood banana with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.
Organic vs synthetic feeds for blood banana
Organic options
A diluted seaweed or worm-casting feed, or fish emulsion if you can tolerate the smell indoors. UK: Westland or Baby Bio Organic, dilute seaweed; US: Espoma Indoor! or Neptune's Harvest fish & seaweed. Slow, gentle and hard to overdo.
Synthetic / liquid feeds
A general-purpose houseplant liquid at half strength — UK: Baby Bio, Westland Houseplant Feed or Phostrogen; US: Miracle-Gro Indoor Plant Food or Schultz. Convenient and fast-acting; the only risk is overdoing it.
Brand names are examples, not endorsements, and UK and US ranges differ — check the label’s own NPK and dilution rate, since formulations change.
Fertilising blood banana — frequently asked questions
What fertiliser does blood banana need?
A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula. Blood Banana is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.
How often should I feed blood banana?
Feed generously during the growing season (spring through early autumn) — bananas are hungry plants. Apply a balanced liquid feed every 1-2 weeks, or a high-potassium feed to support lush foliage. Stop feeding in winter while growth is slow. Repot every 1-2 years in spring into fresh, rich compost. Feed generously during the growing season (spring through early autumn) — bananas are hungry plants. Apply a balanced liquid feed every 1-2 weeks, or a high-potassium feed to support lush foliage. Stop feeding in winter while growth is slow. Repot every 1-2 years in spring into fresh, rich compost. Treat that as every 1-2 weeks between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.
What strength of feed for blood banana?
Half strength is the safe default for blood banana — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding blood banana look like?
Brown, crispy leaf tips and edges with no sign of underwatering. A white, crusty salt deposit on the soil surface or pot rim. Weak, pale, stretched new growth that flops. Lower leaves yellow and drop while the soil is correctly watered. Feeding blood banana year-round on a fixed schedule, including dark winter months, is the most common mistake — it cannot use the nutrients in low light and the surplus simply burns the roots and crusts the soil.
Should I flush the soil of blood banana?
Flush the pot of blood banana with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.
Keep reading
- Blood Banana care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water blood banana — the watering schedule
- The houseplant fertiliser schedule — feeding through the year
- NPK ratio explained — what the three numbers on the bottle mean
- How to fertilise monstera
- How to fertilise pothos
- How to fertilise fiddle leaf fig
- All 271 fertilising guides in the Growli library