Zone 4 · Monkshood

Planting Monkshood in Zone 4

Aconitum napellus

✅ Monkshood thrives in zone 4 (hardy 3–7)

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

August – September

Peak bloom

August

Sun required

part sun

Mature height

48"

Spacing

18" apart

Type

perennial

How to plant Monkshood in zone 4

Plant in spring in rich, moist soil. Highly toxic — wear gloves; keep away from pets and children.

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

Shasta Daisy

Peaks in July

Purple Coneflower

Peaks in July

Salvia

Peaks in June

Tulip

Peaks in April

Want a full bed designed for zone 4?