Well, if you ever need 'em killed- just give me a holler! I can kill impatiens faster than Round-Up!
I bought some wisteria for outside my bedroom windows... I put up trellises for them to climb and they grew really well. But they never bloomed so I asked this old guy I knew how to get them to bloom. He told me to get a baseball bat or a 2x4 and beat the hell out of the roots. I thought he was nuts! But he swore up and down that's what you do... So I did and sure enough... they bloomed beautiful!
WOW that's really weird, glad it worked and he wasn't just winding you up. NO keep away from my gorgeous impatients lol