How to grow costmary
Tanacetum balsamita
When to plant costmary
Plant costmary in spring in a full-sun to partly shaded spot with well-drained soil, propagating by division or root/stem cuttings rather than seed, which germinates poorly (NC State). It dies back in winter in cold climates and resprouts in spring; clip it to prevent legginess and curb its aggressive spread.
Costmary is timed by season rather than your frost dates, so the planting calendar does not generate ZIP-specific dates for it. Check the cited sources below to fine-tune for your area.
Growing conditions
- Lifecycle
- Perennial
- Spacing
- 36 to 72 in apart
- Sun
- Full sun
Common problems
- invasive spreading
- legginess
- poor seed germination
Sources
Last updated .