Troubleshooting
Sierra Leucothoe problems — and how to fix them
Sierra Leucothoe (Leucothoe davisiae) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Lace bugs (Stephanitis sp.)
Cause pale, silvery stippling on the upper leaf surface; check undersides of leaves regularly from late spring. Treat with insecticidal soap or neem oil, targeting the leaf undersides where bugs congregate.
Phytophthora dieback
Waterlogged soil — rather than the consistently moist conditions this plant prefers — can trigger Phytophthora root rot. Ensure drainage is sound and avoid overhead irrigation systems that keep crowns perpetually wet.
Prevent sierra leucothoe problems before they start
Most sierra leucothoe issues are care-mismatch, not bad luck. Dial in the basics:
Sierra Leucothoe problems — FAQ
Why is my sierra leucothoe lace bugs (stephanitis sp.)?
Cause pale, silvery stippling on the upper leaf surface; check undersides of leaves regularly from late spring. Treat with insecticidal soap or neem oil, targeting the leaf undersides where bugs congregate.
Why is my sierra leucothoe phytophthora dieback?
Waterlogged soil — rather than the consistently moist conditions this plant prefers — can trigger Phytophthora root rot. Ensure drainage is sound and avoid overhead irrigation systems that keep crowns perpetually wet.