Canada anemone, Anemone canadensis
A sea of white flowers creates a stunning display in May and June, and attractive foliage makes Canada anemone a great groundcover. 
 
Ecology:
Bees, beetles and flies profit from early-season pollen to provision and establish their nests. Canada anemone is also a caterpillar host plant.
 
Growing conditions:
It occurs naturally in wet meadows, along streambanks and roads. It is a very adaptable plant that can grow in any soil and moisture conditions, just not in full shade. In ideal conditions, which means moist and sunny sites, Canada anemone will spread very quickly and form dense colonies which can serve as beautiful groundcover and a soft landing.