I don't grow the Trumpet Creepers/Trmpet Vines but perhaps your plant is the "Chinese Trumpet Creeper" (Campsis grandiflora): http://ag.sfasu.edu/UserFiles/... which is not supposed to be as aggressive as C. radicans.
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!
