Most maple species seem to have many popular cultivars, but there seem to be very few cultivars of our native Acer circinatum. Is this because it does not tend to produce sports or mutations with different characteristics or just because there is no demand? I just read about a few cultivars on the web, but have never heard them mentioned in any westcoat gardening book, lecture, or article or seen them offered in a local nursery. It seems like even if there isn't a lot of naturally occuring leaf variation there might be valuable selections with particularly green bark or a more arching/weeping form. Has UBC ever attempted to develop/market a special A circenatum? One of the posts here said that Japanese maples could hybridize with A. circenatum, but again I have never heard of such a plant being offered for sale or even described anywhere. It seems like the combination might offer valuable characteristics. What's up here.