Box blight: managing outbreaks

Finding box blight (Cylindrocladium buxicola) in your garden is what you hope to avoid but, despite your best efforts, it may arrive and create havoc with your box plants. If it does, this action plan should help with managing the outbreak.

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Box blight. Credit RHS/Beatrice Henricot

Quick facts

Box blight doesn't kill roots so diseased plants don't necessarily have to be dug out
The fungus survives in infected leaves, stems and residues
Box blight develops and spreads more under wet conditions
Spores can remain viable on fallen leaf litter for at least 6 years

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The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.