Troubleshooting
Dahlia 'Mingus Tina' problems — and how to fix them
Dahlia 'Mingus Tina' (Dahlia 'Mingus Tina') 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.
Powdery mildew
White powdery coating on leaves in humid, crowded conditions. Improve air circulation and apply a dilute sulphur-based spray if severe.
Earwig damage
Ragged holes in petals overnight. Trap earwigs in damp rolled newspaper placed near plants and dispose of in the morning.
Slug and snail damage
Young shoots and tubers are vulnerable. Use organic iron phosphate pellets and remove debris where pests shelter.
Tuber rot
Caused by waterlogged soil or poorly stored tubers. Ensure free drainage; dust cut surfaces with sulphur before storing tubers over winter.
Aphids
Clusters on new growth stunt shoots and transmit viruses. Blast off with water or apply insecticidal soap.
Prevent dahlia 'mingus tina' problems before they start
Most dahlia 'mingus tina' issues are care-mismatch, not bad luck. Dial in the basics:
Dahlia 'Mingus Tina' problems — FAQ
Why is my dahlia 'mingus tina' powdery mildew?
White powdery coating on leaves in humid, crowded conditions. Improve air circulation and apply a dilute sulphur-based spray if severe.
Why is my dahlia 'mingus tina' earwig damage?
Ragged holes in petals overnight. Trap earwigs in damp rolled newspaper placed near plants and dispose of in the morning.
Why is my dahlia 'mingus tina' slug and snail damage?
Young shoots and tubers are vulnerable. Use organic iron phosphate pellets and remove debris where pests shelter.
Why is my dahlia 'mingus tina' tuber rot?
Caused by waterlogged soil or poorly stored tubers. Ensure free drainage; dust cut surfaces with sulphur before storing tubers over winter.
Why is my dahlia 'mingus tina' aphids?
Clusters on new growth stunt shoots and transmit viruses. Blast off with water or apply insecticidal soap.