Are Dahlias Perennials? It Depends on Your Zone

Dahlias are native to frost‑free Mexican mountains. They are perennial only where the ground doesn't freeze (zones 8+). In colder zones, treat as annuals or dig tubers after frost, store in a cool (40–50°F), dry place, and replant in spring.

Storage Basics

• Cut stems to 6 inches after frost blackens foliage.
• Lift clumps, shake off soil, dry a few days.
• Pack in peat moss or vermiculite in ventilated boxes.
• Check monthly for rot or shriveling.

With this routine, you can enjoy dahlias year after year in any climate.