Spots caused by wounding of leaves by spines of nearby leaves during windy conditions. Re-locate plant to a sheltered location or erect wind barriers. Irregular, scorched areas on leaves, especially near margins. Plant adapted varieties in sheltered locations or erect wind barriers. Use antidesiccants in winter.
Twigs die back.
See leaf scorch. University Outreach and Extension does not endorse commercial products. Follow the label on all pesticides.