I have several of these planted in my garden and they haven't seemed bothered by the light frosts we have. But they are in shady areas of the garden and probably have some protection from trees and shrubs around them however. And our periods of freezing temperatures don't usually last very long or go very low. It doesn't get as cold as it would be in Washington. But they have never shown any signs of damage when we've had frost that I can remember. I wasn't growing them in 1990 when we had that really cold spell that killed a lot of things. There are photos on the wiki of my plants. The leaves look different to me from the ones pictured for identification. These plants seem very tolerant of summer drought conditions and wet winters and easy to care for. They are in bloom for a long time and have reseeded to nearby areas.. Mary Sue Mary Sue Ittner California's North Coast Wet mild winters with occasional frost Dry mild summers