I found this at www.wildflowersinbloom.com

My flower’s name is the New England Aster.The scientific classification is Asteraceaea and the sicentific name is novae-angliae.My flower grows up to 2-6 feet tall.The blooming colors are purple and pink.It blooms in August-October.A interesting fact is when the flower is crushed it releases a aroma silimar to turpentine.