Fungal disease
Cherry Powdery Mildew
A fungal disease that coats cherry leaves in white powder, distorting new growth.
Symptoms
- White, powdery patches on leaves and young shoots
- Leaves curling, puckering or turning brittle
- Stunted new growth at the shoot tips
What causes it
Powdery mildew spreads on air and is favoured by warm days, cool nights and humid air; it does not need wet leaves.
What you can do
- Prune to open up the tree and improve air flow.
- Cut off and bin affected shoot tips.
- Avoid heavy nitrogen feeding, which encourages soft, susceptible growth.
- Sulphur-based fungicides can help if used early; follow the label.
Not sure it's powdery mildew?
Photograph one affected leaf and Plantulus will suggest the most likely problem, with a confidence score. It's free and needs no sign-up.
Check a leaf photoGeneral guidance only, not a diagnosis. Check product labels and local rules before using any treatment, and ask a horticultural specialist if a valuable plant is struggling. See the disclaimer.