A hort cliche is that there are “much neglected” plants, to which I say–good. The native clematis species fit this category perfectly. More than a few are not even available commercially.
This red guy, Clematis texensis, is one pricey unit, if you can even find one available. I swapped for this plant with a nursery owner in Texas, and now have a whole jar of seeds. It’s hardy and a beauty. In return, I sent her–
Clematis reticulata isn’t particularly rare, but is rarely sold. We have a few hundred of them, all growing wild. In fact the phenotype, or original sample that the species was described from, came from where we live in Garden City. We have so many I have even stopped collecting seed for these.
In short, if these plants can grow in the sandpile we live on, they will grow in most places. The hardest part is just finding them.