The wild geraniums in my garden don't get very tall either. I have seen them roadside and they seem much taller - maybe the competition with other wild things keeps them reaching more for the sun? As for the JIP, some that I gave to a friend are huge - about 2 1/2 ft tall with enormous leaves. Growing along the north side of her house, they may get some morning sun but that's about it. They're twice the size of my original plants. Wind and rain can cause them to lean more than I'd like. Is Virginia waterleaf a native for you? It grows wild here, has very interesting almost silver-spotted leaves with a pretty pale lavender flower in early summer.
