Bonehead -
I dont' have C. Columbiana, however - I love the integrifolias. I have a number of them and I allow them to scramble on the floor of my garden and through shrubs. Give it a try. Personally I love the look. I just put in a C. Alba and a pink one as well (her name escapes me!).
This one is C. Hukuree
C. Fascination
C. Durandii
