Troubleshooting
Weigela 'Sunny Princess' problems — and how to fix them
Weigela 'Sunny Princess' (Weigela 'Sunny Princess') 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.
Foliage turning green
Typically caused by too much shade or excessive nitrogen. Relocate to full sun and avoid high-nitrogen feeds to maintain the golden leaf colour.
Powdery mildew
More common in congested or shaded plantings. Improve airflow and water consistently at the root zone.
Aphids
Aphids are attracted to young golden growth. Monitor in spring and treat with insecticidal soap or a strong water jet.
Leaf scorch
Yellow leaves are more susceptible to sun scorch in hot climates than green-leaved types. In very hot regions, provide light afternoon shade.
Prevent weigela 'sunny princess' problems before they start
Most weigela 'sunny princess' issues are care-mismatch, not bad luck. Dial in the basics:
Weigela 'Sunny Princess' problems — FAQ
Why is my weigela 'sunny princess' foliage turning green?
Typically caused by too much shade or excessive nitrogen. Relocate to full sun and avoid high-nitrogen feeds to maintain the golden leaf colour.
Why is my weigela 'sunny princess' powdery mildew?
More common in congested or shaded plantings. Improve airflow and water consistently at the root zone.
Why is my weigela 'sunny princess' aphids?
Aphids are attracted to young golden growth. Monitor in spring and treat with insecticidal soap or a strong water jet.
Why is my weigela 'sunny princess' leaf scorch?
Yellow leaves are more susceptible to sun scorch in hot climates than green-leaved types. In very hot regions, provide light afternoon shade.