 Bushy Aster
Bushy AsterSymphyotrichum dumosum
from The Connecticut Botanical Society
 Family: Aster (Asteraceae) 
      • Habitat: open sites with sandy soil
      •   Height: 1-3 feet
      • Flower size: flowerheads 1/2 to 3/4 inches across
      •   Flower color: white to pale purple ray flowers around a yellow to brownish   disk
      • Flowering time: August to October
      • Origin: native 
From Peterson's Guide - flowering branches with many tiny bractlike leaves. Main leaves linear, narrow, spreading or reflexed. Flowers small; rays pale blue-lavender to white. Likes sandy soil.