Troubleshooting
Rose campion problems — and how to fix them
Rose campion (Lychnis coronaria) 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.
Root and crown rot
The number-one killer. Wet, poorly draining soil — especially in winter — causes rapid rotting of the woolly crown. Ensure excellent drainage, particularly in clay soils, and avoid mulching directly over the crown.
Short-lived / dying out
Rose campion is biennial or a short-lived perennial, typically flowering in year two and dying back. Allow it to self-seed freely; seedlings will naturalise and maintain the colony. Collect and scatter seed if you want to control placement.
Powdery mildew
Fungal leaf coating can appear in humid, warm conditions, especially on the foliage by late summer. Seldom serious enough to treat; simply remove affected leaves and maintain adequate plant spacing.
Prevent rose campion problems before they start
Most rose campion issues are care-mismatch, not bad luck. Dial in the basics:
Looking for rose campion in general rather than its problems? Read the full rose campion care guide — light, water, soil and feeding.
Rose campion problems — FAQ
Why is my rose campion root and crown rot?
The number-one killer. Wet, poorly draining soil — especially in winter — causes rapid rotting of the woolly crown. Ensure excellent drainage, particularly in clay soils, and avoid mulching directly over the crown.
Why is my rose campion short-lived / dying out?
Rose campion is biennial or a short-lived perennial, typically flowering in year two and dying back. Allow it to self-seed freely; seedlings will naturalise and maintain the colony. Collect and scatter seed if you want to control placement.
Why is my rose campion powdery mildew?
Fungal leaf coating can appear in humid, warm conditions, especially on the foliage by late summer. Seldom serious enough to treat; simply remove affected leaves and maintain adequate plant spacing.