Purple-blue 4-6" (10-15cm) double blooms in May and June followed by single blooms later in the summer. Mature height 6-9' (2-3m). Pruning group B1.  Hardy to zone 3 with multch.  Ships in 2.5 inch pot. 

Ships once risk of frost has past.

Sold as a 2-year old 4 inch plug.