This one is commonly known as small white aster. It may be Symphyotrichum lateriflorum. One volunteer was found at the edge of the lawn under a blackhaw viburnum last year. It was rescued from the lawn mower and added to the shade garden. One was a blogalong passalong from Gail.
I love their puffy cloud of blooms, gracefully-curved stems, and carefree nature.
Three smooth blue asters were added last year too. The bluish leaves play nicely with the other foliage colors here, and I love their sweet blue blooms.
Asters and other late-blooming native plants like goldenrod make wonderful additions to gardens, blooming at a time of year when flowers are generally less plentiful, adding color to the garden and providing valuable food for pollinators.
Wildflower Wednesday is the bloggers' celebration of native wildflowers begun by our dear Gail at Clay and Limestone, and held on the fourth Wednesday of each month. Please visit her blog for links to more Wildflower Wednesday posts.