24D if you don't want to kill grass around it, pramitol if it don't matter if glyphosphate doesn't scare you, roundup is cheaper.
Does 24D kill shrubs and trees too?
yes if you spray them with it, it kills any broadleaf, will not kill grass. if its climbing trees, cut it off waist high, pull it away from the tree, paint the fresh cut end with 24D, crossbow, or roundup full strength.