The Plant Store is now closed for 2023 and will re-open for sales in May of 2024

  • Please see the Using the Plant Library  page  for some tips on how to make the most of the information here to select species for creating a healthy native plant community suited to the conditions of your site.

Chasmanthium latifolium, Northern Sea Oats

Chasmanthium latifolium

Broad-leaved Chasmanthium or Northern Sea Oats

  • Average to moderately high moisture soils
  • Best in part shade but will tolerate full sun with sufficient moisture
  • 3’ tall, 1’ to 2’ spread
  • Summer blooming, seed heads into the fall
  • Native to Ontario, beginner friendly, open woodland forest and high moisture (but not flooded) ecosystems

New to me this year, grown from seeds from Prairie Moon Nursery https://www.prairiemoon.com/chasmanthium-latifolium-river-oats-prairie-moon-nursery.html 

A clump forming grass that can spread, mostly by seed, to form a large patch if space allows. Their wide bladed foliage, arching stems and dangling seeds create a string visual effect in semi-shaded gardens.

Please check out the Prairie Moon listing at the link above for more details.

Photos by Agnieszka Kwiecień, Averater and Agnieszka Kwiecień 


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Species that were not sown / aren't being sown for 2023 are marked with an * 
Species that are native to this continent, but not historically native to Ontario are marked with a ~ 
While it rarely comes up, I do reserve the right to limit plant quantities, mostly to help ensure that as many native plant gardens as possible become a reality
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