(Reprinted from June 17, 2009)
Several readers have asked recently for an article on clematis vines, since one of them is on the noxious weed list and others are not. Many people seem to be having trouble telling them apart.
There have been five species in the genus clematis found on the eastern slope until recently, one white, one yellow and one blue.
They have now been renamed, and although the plants are still the same, they are now in four different genera and six species.