Perennial flower
Common Monkshood plant profile
Aconitum napellus
A perennial flower for full sun.
Last updated .
When to plant
When to plant Common Monkshood
Propagate monkshood by division and plant in humus-rich, moist but well-drained soil (NC State). In the southern part of its range it needs afternoon sun protection; cut plants back after flowering to promote re-bloom.
The calendar shows this cited seasonal window as an approximate band. It does not convert the season into frost-adjusted dates.
Open Common Monkshood in my garden calendarShows the source-backed planting season, not frost-adjusted dates.
Growing conditions
- Sun
- Full sun
- Soil pH
- 6 to 8
- Lifecycle
- Perennial
- Spacing
- 12 to 18 in apart
- Hardiness
- Zones 3a to 7bFind my hardiness zone
Common problems
Watch for these
Also watch for: crown rot.
Evidence trail
Evidence behind this profile
Original extension and institutional publications behind the planting, care, and safety facts on this page.
- Aconitum (Monkshood), with A. napellus listed as a named cultivar
North Carolina Extension Gardener Plant Toolbox. Supports general reference. Checked 2026-06-18.