Royal Horticultural Society Award of Garden Merit. A beautiful native of eastern Norh America with almost tubular violet blue flowers. You can see from the flower colour and post bloom how this is closely related to Borage! It grows about 40=50cm tall It is very easy to grow in shade or semi shade, preferring moist soil but it will grow in most spots. A useful pollinator for early butterflies such as those emerging from hibernation.
Photo credit: A. Tonelli from Pennsylvania, USA, CC BY 2.0, via Wikimedia Commons