Troubleshooting
Weigela 'Eva Rathke' problems — and how to fix them
Weigela 'Eva Rathke' (Weigela 'Eva Rathke') 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.
Reduced flowering over time
Old, congested stems produce fewer flowers. Remove one-third of the oldest stems at ground level every few years to rejuvenate the plant.
Powdery mildew
Favoured by dry soil and poor air circulation. Thin the canopy and water consistently at the root zone.
Aphids
Soft new growth is attractive to aphids. Treat early with insecticidal soap or encourage ladybirds and lacewings.
Frost damage to flower buds
Late frosts can damage early-opening buds. Situate in a spot sheltered from cold north and east winds if late frosts are frequent.
Prevent weigela 'eva rathke' problems before they start
Most weigela 'eva rathke' issues are care-mismatch, not bad luck. Dial in the basics:
Weigela 'Eva Rathke' problems — FAQ
Why is my weigela 'eva rathke' reduced flowering over time?
Old, congested stems produce fewer flowers. Remove one-third of the oldest stems at ground level every few years to rejuvenate the plant.
Why is my weigela 'eva rathke' powdery mildew?
Favoured by dry soil and poor air circulation. Thin the canopy and water consistently at the root zone.
Why is my weigela 'eva rathke' aphids?
Soft new growth is attractive to aphids. Treat early with insecticidal soap or encourage ladybirds and lacewings.
Why is my weigela 'eva rathke' frost damage to flower buds?
Late frosts can damage early-opening buds. Situate in a spot sheltered from cold north and east winds if late frosts are frequent.