Troubleshooting
Dahlia 'Karma Choc' problems — and how to fix them
Dahlia 'Karma Choc' (Dahlia 'Karma Choc') 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.
Slugs and snails
Devour emerging shoots and chew leaves and petals; protect young growth with barriers, traps, or wildlife-safe controls.
Earwigs
Feed at night, holing petals and leaves; trap in upturned straw-filled pots and shake out in the morning.
Powdery mildew
White coating on leaves late in the season in crowded, humid conditions; improve airflow and water at the base.
Tuber rot over winter
Lifted tubers rot if stored damp or cold; cure, then store in dry, frost-free conditions packed in slightly moist medium.
Prevent dahlia 'karma choc' problems before they start
Most dahlia 'karma choc' issues are care-mismatch, not bad luck. Dial in the basics:
Looking for the species overview? Dahlia — the full care guide.
Dahlia 'Karma Choc' problems — FAQ
Why is my dahlia 'karma choc' slugs and snails?
Devour emerging shoots and chew leaves and petals; protect young growth with barriers, traps, or wildlife-safe controls.
Why is my dahlia 'karma choc' earwigs?
Feed at night, holing petals and leaves; trap in upturned straw-filled pots and shake out in the morning.
Why is my dahlia 'karma choc' powdery mildew?
White coating on leaves late in the season in crowded, humid conditions; improve airflow and water at the base.
Why is my dahlia 'karma choc' tuber rot over winter?
Lifted tubers rot if stored damp or cold; cure, then store in dry, frost-free conditions packed in slightly moist medium.