Zone 3 · Spider Flower

Planting Spider Flower in Zone 3

Cleome hassleriana

✅ Spider Flower thrives in zone 3 (hardy 2–11)

Can I plant today?

Last frost is in 4 weeks. Wait until soil warms.

Evaluated for April 27, 2026 ·

Zone's last frost

around May 15

Zone's first frost

around September 15

Bloom window

July – September

Peak bloom

August

Sun required

full sun

Mature height

48"

Spacing

18" apart

Type

annual

How to plant Spider Flower in zone 3

Direct-sow after last frost. Self-sows vigorously — deadhead if you want to control spread.

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

Purple Coneflower

Peaks in July

Tulip

Peaks in April

Daffodil

Peaks in April

Bee Balm

Peaks in July

Want a full bed designed for zone 3?