Zone 9 · Dahlia

Planting Dahlia in Zone 9

Dahlia hybrida

✅ Dahlia thrives in zone 9 (hardy 3–11)

Can I plant today?

Dahlia has a specific planting window in zone 9. Check back in spring.

Evaluated for April 27, 2026 ·

Zone's last frost

around February 15

Zone's first frost

around December 15

Bloom window

July – October

Peak bloom

August

Sun required

full sun

Mature height

36"

Spacing

24" apart

Type

bulb

How to plant Dahlia in zone 9

Plant tubers after last frost. In zones 3–7, dig tubers in fall after first frost and store indoors in peat moss.

Dahlia peaks in August. These companions keep your bed in color before and after.

Shasta Daisy

Peaks in July

Purple Coneflower

Peaks in July

Daffodil

Peaks in April

Bee Balm

Peaks in July

Want a full bed designed for zone 9?