Each flower and tree is interesting to see ~ watch closely as each unfolds.
 

Aster, Eastern star
Anonymously grown for many years and was finally deemed worthy of a name. It is shorter than the species and has deep dark shining mahogany stems. Originally collected from coastal Rhode Island. Clump forming, with arching, wiry, black-purple stems with green leaves. Tiny white flowers August through end of September.

CULTIVATION: Moist, moderately fertile soil in partial shade.
PROPAGATION: Divide or separate runners, preferably in spring, otherwise in autumn.
PESTS AND DISEASES: Wilt, gray mold, powdery mildew, rusts, fungal leaf spots and stem cankers. Prone to rosy blister, gall, aphids, tarsonemid mites, slugs, snails, and nematodes.

A. divaricatus,

Zone: 4 - 8    -    H 9 - 1	Part shade to Shade
Height: 18 - 24 inches	Width: 12 - 18 inches
Bloom Time: Late summer	Bloom Color: White. Minute/tiny.
Location: Left river birch	Planted: 2004