Troubleshooting
Spreading Bellflower problems — and how to fix them
Spreading Bellflower (Campanula patula) 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.
Slugs and snails
Seedlings and young basal rosettes are highly vulnerable; use copper tape or iron phosphate pellets around emerging plants, especially after rain.
Botrytis (grey mould)
Can devastate dense plantings in wet conditions; improve spacing and airflow, and remove dead foliage promptly to reduce spore load.
Prevent spreading bellflower problems before they start
Most spreading bellflower issues are care-mismatch, not bad luck. Dial in the basics:
Spreading Bellflower problems — FAQ
Why is my spreading bellflower slugs and snails?
Seedlings and young basal rosettes are highly vulnerable; use copper tape or iron phosphate pellets around emerging plants, especially after rain.
Why is my spreading bellflower botrytis (grey mould)?
Can devastate dense plantings in wet conditions; improve spacing and airflow, and remove dead foliage promptly to reduce spore load.