Diseases Sooty mould
Black soot-like film
A black, soot-like deposit covers the upper leaf surfaces.
Also called: sooty mouldblack filmsootsticky black leaves
Severity
Minor
No rush: fix it at your own pace.
Parts affected
- Leaves
- Stems
- Flowers
- Fruit
- Roots
- Soil
Family
Diseases
Fungi, bacteria and rot: the signs and the right moves.
Understand
What is happening inside the plant
Sooty mould does not attack the plant: it is a fungus that grows on honeydew, the sugary substance excreted by aphids, scale and whitefly.
Full diagnosis
The rest is in the app
Sign-by-sign checks, an action plan, prevention: the full “Black soot-like film” diagnosis is waiting for you in Plenova. And the app diagnoses your plant from a single photo.
- 4 signs to check on your plant
- A 3-step action plan
- 5 symptoms and causes explained
- 2 ways to stop it coming back
- Diagnosis from a photo of your plant
Free app, no ads.
Keep an eye on it White powder on leaves
A white, powdery film covering the leaves and stems.
Causes and fixes
Keep an eye on it Orange pustules
Orange, powdery pustules appearing on the undersides of leaves.
Causes and fixes
Keep an eye on it Brown haloed spots
Brown spots ringed with a yellow halo spread across the leaves.
Causes and fixes