Smooth Blue Aster (Symphyotrichum laeve): Beautiful, Tough, and Apparently Delicious to Bunnies. Smooth Blue Aster—formerly known as Aster laevis—is one of the loveliest late-season native wildflowers in the Northeast. With soft blue petals and a clean, upright form, it brings gentle color into the fall garden just when most blooms are fading. Bees, butterflies, and […]