Pocket Botanist
Check these first
- Inspect the underside of the leaves for orange dust.
- Check if the spots have a yellow halo around them.
- Look for signs of high humidity or poor airflow.
Likely causes
Elderberry Rust
Most likelyHow to tell: You will see bright orange or yellow pustules on the undersides of leaves. The leaves may eventually curl or drop prematurely.
What to do: Prune away and destroy all infected foliage immediately to stop the spread. Do not compost these leaves, as the fungus can survive and return next season.
Leaf Spot Fungi
PossibleHow to tell: These appear as dark brown or black spots with yellow halos. They often occur when the leaves stay wet for too long.
What to do: Improve air circulation around the plant by thinning out dense branches. Water only at the base of the plant to keep the foliage dry.
When to worry
It is serious if the spots cover most of the foliage and cause early leaf drop. A few spots are normal in damp, humid summers.
Stopping it coming back
Keep the area around the base of the plant clear of debris and ensure the shrub gets plenty of sunlight to dry off quickly after rain.
Not sure which one it is? Photograph your american elderberry.
This page lists the usual causes. Pocket Botanist looks at your actual leaf and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.
Questions people ask
- Will these spots kill my elderberry?
- Usually no, but it weakens the plant if left untreated. Consistent pruning helps the plant recover.
- Can I use a fungicide?
- You can, but physical removal of infected leaves is safer and often more effective for home gardens. Always follow label instructions if you choose a spray.
More problems with American elderberry
Back to the American elderberry guide
This article was generated with AI from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.