Troubleshooting
Dahlia 'Labyrinth' problems — and how to fix them
Dahlia 'Labyrinth' (Dahlia 'Labyrinth') 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.
Stem flop and broken blooms
The heavy dinnerplate flowers snap unstaked stems. Insert sturdy stakes or a grid at planting and tie in stems as they grow.
Tuber rot
From cold, waterlogged soil or storing damaged tubers. Use free-draining ground, withhold water until shoots emerge, and cure tubers before storage.
Powdery mildew
Common late-season on its large leaves in crowded plantings. Improve spacing and airflow, water at the base, and remove infected foliage promptly.
Earwigs in blooms
Earwigs hide in the dense petals and chew them. Trap them in rolled cardboard or straw-filled pots set near the plants and empty traps each morning.
Prevent dahlia 'labyrinth' problems before they start
Most dahlia 'labyrinth' issues are care-mismatch, not bad luck. Dial in the basics:
Looking for the species overview? Dahlia — the full care guide.
Dahlia 'Labyrinth' problems — FAQ
Why is my dahlia 'labyrinth' stem flop and broken blooms?
The heavy dinnerplate flowers snap unstaked stems. Insert sturdy stakes or a grid at planting and tie in stems as they grow.
Why is my dahlia 'labyrinth' tuber rot?
From cold, waterlogged soil or storing damaged tubers. Use free-draining ground, withhold water until shoots emerge, and cure tubers before storage.
Why is my dahlia 'labyrinth' powdery mildew?
Common late-season on its large leaves in crowded plantings. Improve spacing and airflow, water at the base, and remove infected foliage promptly.
Why is my dahlia 'labyrinth' earwigs in blooms?
Earwigs hide in the dense petals and chew them. Trap them in rolled cardboard or straw-filled pots set near the plants and empty traps each morning.