It depends where in southern British Columbia your questioner lives. I live there, in the rainshadow of the Olympic Mountains, where we get 27 inches of rain a year, and there are native cactus growing on various small islands. However, a few hours drive away on the west coast of Vancouver Island, gardeners enjoy frost-free conditions and well over 10 times the rain I get. I am in Blue Dick country right now, and bought a lot of seeds of various California wildflowers at Tilden Botanic Garden. I will know in a few years whether Blue Dicks will grow for me. Diane Whitehead Victoria, British Columbia, Canada