Fertilising guide
How to fertilise Wine Cups Babiana (Babiana rubrocyanea)— schedule & NPK
Also called Wine cups babiana, Wine cup baboon flower, Rooibloubobbejaantjie.
More about wine cups babiana
About Wine Cups Babiana
Babiana rubrocyanea · also called Wine cups babiana, Wine cup baboon flower · flowering
Babiana rubrocyanea is a cormous perennial native to the Western Cape of South Africa, producing vivid wine-red and blue funnel-shaped flowers on short spikes in spring. It thrives in full sun with sharply drained, sandy soil and demands a warm, dry summer dormancy — in most of the UK it must be grown under glass or lifted and stored after flowering. The single most important care fact is to keep corms bone dry once the leaves die down, as summer moisture causes rot. Babiana is not confirmed safe for pets; treat as mildly toxic and keep away from cats and dogs.
Growth habit: Low-growing clump-forming cormous perennial with ribbed, lance-shaped pleated leaves and upright flower spikes to 20 cm.
What fertiliser wine cups babiana actually wants — and why
Wine Cups Babiana 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 wine cups babiana: 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 wine cups babiana, 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 wine cups babiana:
Apply a balanced liquid fertiliser at half strength every three weeks from shoot emergence until buds open; withhold once flowers fade. Treat that as sparingly through the growing season 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 wine cups babiana 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 wine cups babiana
Half strength is the safe default for wine cups babiana — 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 wine cups babiana first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the wine cups babiana watering schedule.
Signs you are over-feeding wine cups babiana
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for wine cups babiana:
- 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 wine cups babiana
- 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 wine cups babiana care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of wine cups babiana 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 wine cups babiana
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 wine cups babiana — frequently asked questions
What fertiliser does wine cups babiana 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. Wine Cups Babiana 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 wine cups babiana?
Apply a balanced liquid fertiliser at half strength every three weeks from shoot emergence until buds open; withhold once flowers fade. Apply a balanced liquid fertiliser at half strength every three weeks from shoot emergence until buds open; withhold once flowers fade. Treat that as sparingly through the growing season 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 wine cups babiana?
Half strength is the safe default for wine cups babiana — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding wine cups babiana 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 wine cups babiana 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 wine cups babiana?
Flush the pot of wine cups babiana 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
- Wine Cups Babiana care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water wine cups babiana — 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 rhododendron 'pjm'
- How to fertilise rhododendron 'cunningham's white'
- How to fertilise deciduous azalea 'gibraltar'
- All 10153 fertilising guides in the Growli library