Pocket Botanist
Check these first
- Examine the leaves for white dust or dark spots.
- Check if the plant is crowded by other shrubs.
- Observe if the leaves stay wet for a long time after rain.
Likely causes
Fungal Leaf Spot
Most likelyHow to tell: Small brown or black spots appear on the leaves, sometimes with a yellow halo. These spots may grow and cause the leaf to drop prematurely.
What to do: Remove and destroy all infected leaves to stop the spread. Improve airflow by thinning out crowded stems and avoiding overhead watering.
Powdery Mildew
PossibleHow to tell: A white, dusty coating appears on the leaves and stems. It often starts as small spots before covering the entire leaf surface.
What to do: Prune away the most heavily affected foliage to increase light and air movement. You can use a mild horticultural oil or neem oil spray if the infection is widespread.
Find out what's wrong with your clematis
The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.
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When to worry
A few spots are common in humid summers and rarely kill the plant. Worry if the spots cover most of the foliage or cause the plant to lose all its leaves.
Stopping it coming back
Water at the base of the plant rather than spraying the leaves. Give your clematis plenty of space to ensure good air circulation between vines.
Clematis: spots? Check yours with a photo
Every plant is a little different. Take a photo of your clematis and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.
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Questions people ask
- Should I remove all spotted leaves?
- Yes, removing infected leaves helps reduce the amount of fungus present. Always clean your shears with alcohol between cuts to avoid spreading spores.
- Will leaf spots kill my clematis?
- Usually not, but they can make the plant look unsightly and weaken it over time. Keeping the plant healthy with proper care is the best defense.
Guides to these causes
More problems with Clematis
This article was generated with AI on from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.