Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous > Euonymus > Spots or blotches on leaves
Euonymus > Leaves > Spots or blotches on leaves
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Marssonina leaf spot
Marssonina thomasiana
- Small, purplish red spots with a cream colored center on leaves and young branches
- Severely infected leaves may turn yellow to red and drop
- In severe infections, spots may grow together and girdle young shoots
- Most common on Eastern wahoo (Euonymus atropurpurea)
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Powdery mildew
Oidium euonymi-japonici
- White to gray fungal growth on upper leaf surface; may form a thick felt
- Leaves may yellow and drop prematurely
- Young shoots may be curled and twisted
- Entire shrub may appear gray or discolored
- More information on Powdery mildew
