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Fertilising guide

How to fertilise Begonia 'Corbeille de Feu' (Begonia 'Corbeille de Feu')— schedule & NPK

Also called basket of fire begonia, Corbeille de Feu.

More about begonia 'corbeille de feu'

About Begonia 'Corbeille de Feu'

Begonia 'Corbeille de Feu' · also called basket of fire begonia, Corbeille de Feu · flowering

Begonia 'Corbeille de Feu', meaning 'basket of fire', is a trailing tuberous begonia smothered in masses of small coral-to-fiery-red pendent flowers all summer. Its cascading stems make it a star of hanging baskets and window boxes. Grown from a winter-dormant tuber, it needs bright-indirect light, even moisture, warmth, and frost-free overwintering to flower year after year.

Growth habit: Trailing tuberous begonia; soft, brittle stems cascade from a winter-dormant tuber, carrying near-continuous pendent flower clusters through summer.

What fertiliser begonia 'corbeille de feu' actually wants — and why

Begonia 'Corbeille de Feu' 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 begonia 'corbeille de feu': 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 begonia 'corbeille de feu', 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 begonia 'corbeille de feu':

Feed every 1-2 weeks from late spring through summer with a high-potassium liquid feed (such as tomato fertiliser) at half to full strength to sustain the heavy flowering. Stop feeding in late summer as the plant prepares for dormancy. 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 begonia 'corbeille de feu' 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 begonia 'corbeille de feu'

Half strength is the safe default for begonia 'corbeille de feu' — 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 begonia 'corbeille de feu' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the begonia 'corbeille de feu' watering schedule.

Signs you are over-feeding begonia 'corbeille de feu'

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for begonia 'corbeille de feu':

Signs you are under-feeding begonia 'corbeille de feu'

If the symptoms point at watering, light or roots rather than nutrition, the full begonia 'corbeille de feu' care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

Flush the pot of begonia 'corbeille de feu' 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 begonia 'corbeille de feu'

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 begonia 'corbeille de feu' — frequently asked questions

What fertiliser does begonia 'corbeille de feu' 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. Begonia 'Corbeille de Feu' 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 begonia 'corbeille de feu'?

Feed every 1-2 weeks from late spring through summer with a high-potassium liquid feed (such as tomato fertiliser) at half to full strength to sustain the heavy flowering. Stop feeding in late summer as the plant prepares for dormancy. Feed every 1-2 weeks from late spring through summer with a high-potassium liquid feed (such as tomato fertiliser) at half to full strength to sustain the heavy flowering. Stop feeding in late summer as the plant prepares for dormancy. 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 begonia 'corbeille de feu'?

Half strength is the safe default for begonia 'corbeille de feu' — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.

What does over-feeding begonia 'corbeille de feu' 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 begonia 'corbeille de feu' 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 begonia 'corbeille de feu'?

Flush the pot of begonia 'corbeille de feu' 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.

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