as mentioned before, i believe that at least some forms of havardiana are very intolerant of cool, wet winters and therefore not good prospects for the pnw (at least those areas west of the cascades). a havardiana from plant delights nursery now spends the winters in a greenhouse because it couldnt tolerate staying out in a pot over our wet winters---2 forms of salmiana from the same nursery have done much better outside in pots in a rather dimly lit lath house. on the other hand, gentrii, americana ssp. protoamericana, and oddly enought so far francozsiiana (or whatever you call it) have down well for several winters outside on a gravel mound.
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