Sanguisorba canadensis

Canada Burnet

• Average to high moisture, peaty soils 
• Full Sun
• 2’ to 6’ tall 1’ to 3’ wide 
• Late Summer Blooms
• Thrives in high moisture ecosystems but also adapts reasonably well to garden and meadow ecosystems. 
• This range of this very showy species extends from Quebec east and doesn’t historically include Ontario.

In the relatively sandy soil, dryish areas that these are planted at my place they grow to around 2’ in height and are slow to spread. In their preferred conditions of high moisture availability and high organic matter soil they can reach 6’ in height. I suspect that they would roughly split the difference in a conventional garden setting.

The close-up photos are from the plants I tend, the larger patch is a photo by Laval University via Wikimedia Commons 

Prairie Moon has a fun and fanciful description of this species here https://www.prairiemoon.com/sanguisorba-canadensis-american-burnet-prairie-moon-nursery.html