North Scituate, RI (Zone 6a) | February 2004 | positive
I've grown this in Zone 5, and it always survives - coming back stronger every year. It's gotten to the point where it's almost invasive...Read More. I would take it out entirely, but when it's in full bloom it's sooooo pretty. I've never fed or watered it (except for a few waterings when the plant was initially set in), and nothing seems to stop it. Three small divisions have spread about 18 feet in 20 years.
I've grown this in Zone 5, and it always survives - coming back stronger every year. It's gotten to the point where it's almost invasive...Read More
Clumps of deep green leaves appear like a miniature broad-leaved evergreen. Spikes of mid-blue flowers are produced in abundance.