Back to the trumpet vine -- I planted this in-ground with morning sun afternoon shade and never had any blooms. Good foliage, but no flowers. Also not too aggressive. Dug it out with intent to relocate but never got around to that and it died. I have had very little regrowth where I dug it out other then the occasional sprout now and again. I'm in the Pacific NW, Zone 8. Temperate, wet, mild.