Beginner Gardening: New England Aster blooming too early?, 1 by JulieQ

JulieQ wrote:
Hi all, About three weeks ago I planted some clearance New England Asters from Bluestone Perennials. They are supposed to get 18" tall and bloom in late summer/ fall. Well, they are already getting buds now in June, and they are only 6-7" tall. I wonder if I need to pinch them like I do my mums?
Has anyone grown these, and can give a little advice?
I wonder if it will just take a year to get them "on schedule" haha.