While the hardiness of specific species varies, many asters thrive in zones 4 through 8, and are excellent options for gardeners in large swathes of North America.

Dear Sue: I have a flower bed full of asters and want to know if I can thin them out now or should I wait? Joseph Sodl, Coplay Dear Joseph: Asters, like mums, are usually divided in the spring, pri… ...

Dig up overgrown daylilies, asters, mums and coral bells now and use an ax or Compleat Gardener: Divide daylilies, asters, mums and start thinking seeds Skip to main content Skip to main content ...