Bidens aristosa 

Bearded Beggarticks

• Wet to moderately wet soils 
• Full Sun
• 36” tall, 18” to 24” wide
• Mid summer to fall blooming
• Annual, High moisture ecosystems. 

New to me, grown from seeds from Prairie Moon Nursery https://www.prairiemoon.com/bidens-aristosa-swamp-marigold-prairie-moon-nursery.html 

Probably the showiest of the Biddens family, this species is not historically native to Ontario, with a range that once ended at the southern shores of Lake Ontario.  I suspect that these will adapt reasonably to growing in containers, so I’m going to give them a try this summer. 

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

Photos 1, 2 and 3 by Famartin via Wikimedia Commons