All of Canada, except NF, NS, NU and NWT
Smooth Aster (Symphyotrichum laeve) has leaves that are smooth to the touch, distinguishing it from most other Aster varieties. The stem also often takes on a shade of blue. This is a non-aggressive plant that is slow to spread so it is a nice one to have in the garden with companions. The beautiful purple-blue flowers attract many different pollinators and the plant is host for the Silvery Checkerspot and Pearl Crescent Butterflies.
No pre-treatment required. Sow seed at soil surface. Do not let seedling dry out while it is establishing.