Northern Sea Oats plant profile
Chasmanthium latifolium
A perennial grass for partial sun.
Last updated .
When to plant
When to plant Northern Sea Oats
Northern sea oats is a clump-forming perennial grass for shade or part shade, established from seed or by division. As a perennial grass it is best set out or divided in spring; note that it self-seeds and can spread, so place it where some spread is acceptable.
The calendar shows this cited seasonal window as an approximate band. It does not convert the season into frost-adjusted dates.
Open Northern Sea Oats in my garden calendarShows the source-backed planting season, not frost-adjusted dates.
Growing conditions
- Sun
- Partial sun
- Lifecycle
- Perennial
- Spacing
- 12 to 36 in apart
- Hardiness
- Zones 5a to 9bFind my hardiness zone
Next steps
Continue with Northern Sea Oats
Evidence trail
Evidence behind this profile
Original extension and institutional publications behind the planting, care, and safety facts on this page.
- Chasmanthium latifolium (Northern Sea Oats)
North Carolina Extension Gardener Plant Toolbox (NC State Extension). Supports general reference. Checked 2026-06-18.