Overwintering Dinnerplate Dahlias in Zone 6: Tuber Storage Protocol

Dinnerplate dahlias (Dahlia hybrids) are Mexican natives that won't survive Massachusetts winters (zone 6) in ground.

Lift and Store Method

1. After frost kills foliage, cut stems to 6".
2. Dig carefully—avoid damaging tuber necks.
3. Shake off soil; do not wash.
4. Air-dry 1–2 weeks in frost-free shade.
5. Dust with sulfur fungicide.
6. Store in peat/vermiculite in mesh bags/cardboard boxes.
7. Cool (40–50°F), dark, dry location (basement).
8. Check monthly; mist if shriveling.

Spring Replanting

• After last frost, soil >60°F.
• Plant tubers 4–6" deep, eye up.
• Stake at planting for giant blooms.

Pro Tip

Label varieties! Dinnerplate types need extra support and feeding.