Sorry, in my introduction, I didn't mean to be chauvinist. I had meant to convert and give metric also, so here it is 45-50" = 1140-1270mm 100" = 2540mm 10-15 degrees F. = -12 to -9 C. 0 degrees F. = -18 C. Ernie O'Byrne Northwest Garden Nursery 86813 Central Road Eugene OR 97402-9284 USA Phone 541 935-3915 FAX 541 935-0863 Eugene, Oregon is USDA Zone 8a on the map, but we can only grow Zone 7 plants reliably. Member of NARGS, SRGC, RHS, American Primula Society, Meconopsis Group, Alpine-L, Arisaema-L, Hellebore Group "Peace is not merely a distant goal that we seek, but a means by which we arrive at that goal." -- Martin Luther King, Jr.