Troubleshooting
Common Foxglove problems — and how to fix them
Common Foxglove (Digitalis purpurea) 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.
Crown rot in wet soil
Overwinter rosettes rot in heavy, waterlogged ground. Plant in well-drained, humus-rich soil and avoid winter wet.
Powdery mildew and leaf spot
Foliage can develop fungal spotting or mildew in crowded, humid conditions. Space plants and remove affected leaves.
Dies after flowering
As a biennial it usually perishes once it seeds. Leave some spikes to self-sow, or sow fresh seed yearly for continuity.
Aphids and capsid bugs
Sap-suckers distort new growth and flower buds. Monitor and treat early; encourage natural predators.
Prevent common foxglove problems before they start
Most common foxglove issues are care-mismatch, not bad luck. Dial in the basics:
Looking for common foxglove in general rather than its problems? Read the full common foxglove care guide — light, water, soil and feeding.
Common Foxglove problems — FAQ
Why is my common foxglove crown rot in wet soil?
Overwinter rosettes rot in heavy, waterlogged ground. Plant in well-drained, humus-rich soil and avoid winter wet.
Why is my common foxglove powdery mildew and leaf spot?
Foliage can develop fungal spotting or mildew in crowded, humid conditions. Space plants and remove affected leaves.
Why is my common foxglove dies after flowering?
As a biennial it usually perishes once it seeds. Leave some spikes to self-sow, or sow fresh seed yearly for continuity.
Why is my common foxglove aphids and capsid bugs?
Sap-suckers distort new growth and flower buds. Monitor and treat early; encourage natural predators.