Soil & potting mix
Best soil for Begonia 'Corbeille de Feu' (Begonia 'Corbeille de Feu')
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.
Preferred mix: Rich, free-draining basket or potting mix
Watch for — Tuber rot: A soft, mushy tuber follows overwatering or wet winter storage. Drain baskets well in summer and store dormant tubers cool, dry, and frost-free over winter.
Why begonia 'corbeille de feu' needs this mix
Begonia 'Corbeille de Feu' wants a light, fine, evenly moist mix — soft-rooted and crown-sensitive, it suits an airy 1:1:1 blend, not heavy compost.
- Begonia 'Corbeille de Feu' has fine, shallow roots and a crown that rots if it sits wet, so the mix must be light, airy and only evenly moist.
- Equal parts compost, perlite and vermiculite give steady moisture and plenty of air at once — the balance this plant flowers on.
- A heavy, dense mix smothers the fine roots and is the usual reason it sulks and refuses to bloom.
For the full picture on what makes up a good mix, see our guide to the main types of soil and potting media — it explains why each ingredient above behaves the way it does.
What goes wrong with the wrong mix
The wrong soil is one of the most common reasons begonia 'corbeille de feu' struggles, and the damage often shows up weeks later as a watering problem. For this species specifically:
- Heavy, water-holding compost rots begonia 'corbeille de feu''s crown and fine roots — the plant goes limp and mushy at the centre.
- A coarse, gritty cactus-style mix dries too fast and the fine roots desiccate.
- Burying the crown when potting (rather than keeping it just at the surface) causes rot even in a good mix.
Using heavy compost and burying the crown. Begonia 'Corbeille de Feu' wants a light 1:1:1 mix with the crown sitting right at the surface.
pH — does it matter for begonia 'corbeille de feu'?
Begonia 'Corbeille de Feu' is not fussy about pH — a slightly acidic to neutral mix (around pH 6.0-7.0), which a standard peat-free compost provides, is perfectly fine. No testing needed.
If you want to check or adjust it, the soil pH guide walks through testing and the safe ways to nudge a mix more acidic or more alkaline.
DIY mix vs a bagged one
A decent bagged houseplant compost works for begonia 'corbeille de feu' as long as you mix in perlite for air. The simple DIY ratio above is cheap and more reliable than a budget bag alone.
Drainage and the pot
Use a small pot with a drainage hole and water from the bottom to keep the crown dry — wet leaves and a wet crown are this plant's main enemies.
Refresh begonia 'corbeille de feu''s mix every 18-24 months; even good compost slumps and compacts, and fresh, airy mix is often the simplest fix for a tired plant. When the time comes, our repotting guide for begonia 'corbeille de feu' covers the timing and technique step by step.
Begonia 'Corbeille de Feu' soil — frequently asked questions
What is the best soil mix for begonia 'corbeille de feu'?
1 part peat-free houseplant compost : 1 part perlite : 1 part vermiculite. Begonia 'Corbeille de Feu' has fine, shallow roots and a crown that rots if it sits wet, so the mix must be light, airy and only evenly moist.
Can I use normal potting soil for begonia 'corbeille de feu'?
Heavy, water-holding compost rots begonia 'corbeille de feu''s crown and fine roots — the plant goes limp and mushy at the centre. A decent bagged houseplant compost works for begonia 'corbeille de feu' as long as you mix in perlite for air. The simple DIY ratio above is cheap and more reliable than a budget bag alone.
Does begonia 'corbeille de feu' need a special pH?
Begonia 'Corbeille de Feu' is not fussy about pH — a slightly acidic to neutral mix (around pH 6.0-7.0), which a standard peat-free compost provides, is perfectly fine. No testing needed.
Should I buy a bagged mix or make my own for begonia 'corbeille de feu'?
A decent bagged houseplant compost works for begonia 'corbeille de feu' as long as you mix in perlite for air. The simple DIY ratio above is cheap and more reliable than a budget bag alone.
How often should I refresh the soil for begonia 'corbeille de feu'?
Refresh begonia 'corbeille de feu''s mix every 18-24 months; even good compost slumps and compacts, and fresh, airy mix is often the simplest fix for a tired plant. Use a small pot with a drainage hole and water from the bottom to keep the crown dry — wet leaves and a wet crown are this plant's main enemies.
Keep reading
- Begonia 'Corbeille de Feu' care — the full brief (light, water, humidity, problems, pet safety)
- How often to water begonia 'corbeille de feu' — the schedule the mix feeds into
- Repotting begonia 'corbeille de feu' — when and how to refresh the mix
- Soil pH guide — test it and adjust it safely
- Should I water my plant? The simple check first
- Overwatered plant — signs and recovery
- Root rot — how the wrong soil starts it, and how to save the plant
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