No T-shirt winner this week, suggested by Roderick Cameron, owner Great Comp Garden in England

Common Name:
Aster

Scientific Name:
Aster frikartii 'Monch'

Type: Herbaceous perennial

Size: Grows 2-3' high

Habit: Clump forming

Flowers: Lavender-blue flowers from mid-summer to fall

Culture: Full sun

Use: Borders