Fertilising guide
How to fertilise Angel Wing Begonia 'Lucerna' (Begonia corallina 'Lucerna')— schedule & NPK
Also called Angel Wing Begonia, Lucerna Begonia, Corallina de Lucerna, Cane Begonia, Spotted Angel Wing Begonia.
More about angel wing begonia 'lucerna'
About Angel Wing Begonia 'Lucerna'
Begonia corallina 'Lucerna' · also called Angel Wing Begonia, Lucerna Begonia · houseplant
A cane-type begonia prized for its silver-spotted, wing-shaped leaves and year-round clusters of pendant coral-pink flowers. It wants bright indirect light, evenly moist (not soggy) soil, and warmth above 13C. Easy and fast-growing indoors, but toxic to cats, dogs, and horses, so keep it out of reach of pets.
Growth habit: Upright, cane-forming (bamboo-like) evergreen with jointed stems and arching, asymmetrical wing-shaped leaves; produces hanging clusters of small coral-pink to red flowers, often year-round indoors. Pinch and prune the canes to keep the plant bushy and prevent it from becoming tall and bare at the base.
What fertiliser angel wing begonia 'lucerna' actually wants — and why
Angel Wing Begonia 'Lucerna' 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 angel wing begonia 'lucerna': 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 angel wing begonia 'lucerna', 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 angel wing begonia 'lucerna':
Feed every 2-4 weeks during the spring and summer growing season with a balanced liquid houseplant fertiliser diluted to half strength. A bloom-oriented (higher-phosphorus) feed can encourage flowering. Stop or reduce feeding in autumn and winter when growth slows. Treat that as every 2-4 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 angel wing begonia 'lucerna' 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 angel wing begonia 'lucerna'
Half strength is the safe default for angel wing begonia 'lucerna' — 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 angel wing begonia 'lucerna' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the angel wing begonia 'lucerna' watering schedule.
Signs you are over-feeding angel wing begonia 'lucerna'
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for angel wing begonia 'lucerna':
- 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 angel wing begonia 'lucerna'
- 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 angel wing begonia 'lucerna' care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of angel wing begonia 'lucerna' 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 angel wing begonia 'lucerna'
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 angel wing begonia 'lucerna' — frequently asked questions
What fertiliser does angel wing begonia 'lucerna' 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. Angel Wing Begonia 'Lucerna' 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 angel wing begonia 'lucerna'?
Feed every 2-4 weeks during the spring and summer growing season with a balanced liquid houseplant fertiliser diluted to half strength. A bloom-oriented (higher-phosphorus) feed can encourage flowering. Stop or reduce feeding in autumn and winter when growth slows. Feed every 2-4 weeks during the spring and summer growing season with a balanced liquid houseplant fertiliser diluted to half strength. A bloom-oriented (higher-phosphorus) feed can encourage flowering. Stop or reduce feeding in autumn and winter when growth slows. Treat that as every 2-4 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 angel wing begonia 'lucerna'?
Half strength is the safe default for angel wing begonia 'lucerna' — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding angel wing begonia 'lucerna' 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 angel wing begonia 'lucerna' 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 angel wing begonia 'lucerna'?
Flush the pot of angel wing begonia 'lucerna' 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
- Angel Wing Begonia 'Lucerna' care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water angel wing begonia 'lucerna' — 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 snake plant
- How to fertilise dracaena
- How to fertilise peperomia
- All 609 fertilising guides in the Growli library