Hi, This plant is widespread in California, spilling into Oregon and Baja California from the coast to the foothills and even to the deserts occurring from 0 to 7545 feet (2300 meters). One would expect it to be very adaptable or at least that there would be a variety from a particular area that would be fine in British Columbia. It doesn't seem to be bothered by rain where I live. We average about 60 inches (152 cm.) and some years a lot more. I was excited when I found one to show Uli when he visited since they were just starting, but he had already seen them in larger numbers in Southern California. Mary Sue