Troubleshooting
Prunus serrula problems — and how to fix them
Prunus serrula (Prunus serrula) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Silver leaf
Chondrostereum purpureum fungus causes silvery foliage and dieback; prune only in summer in dry weather to limit spore entry.
Bacterial canker
Sunken, gummy stem lesions and shot-hole leaves; prune out affected wood promptly and avoid winter pruning.
Aphids
Colonies curl new shoot tips and produce sticky honeydew; tolerate light infestations or wash off, as beneficial insects usually control them.
Bark damage
The prized polished bark is thin and easily scarred by strimmers, ties or careless handling; protect the trunk and keep mulch off the bark.
Prevent prunus serrula problems before they start
Most prunus serrula issues are care-mismatch, not bad luck. Dial in the basics:
Looking for prunus serrula in general rather than its problems? Read the full prunus serrula care guide — light, water, soil and feeding.
Prunus serrula problems — FAQ
Why is my prunus serrula silver leaf?
Chondrostereum purpureum fungus causes silvery foliage and dieback; prune only in summer in dry weather to limit spore entry.
Why is my prunus serrula bacterial canker?
Sunken, gummy stem lesions and shot-hole leaves; prune out affected wood promptly and avoid winter pruning.
Why is my prunus serrula aphids?
Colonies curl new shoot tips and produce sticky honeydew; tolerate light infestations or wash off, as beneficial insects usually control them.
Why is my prunus serrula bark damage?
The prized polished bark is thin and easily scarred by strimmers, ties or careless handling; protect the trunk and keep mulch off the bark.