My impatiens are getting very leggy and I was told to pinch them off. Exactly where do you do the pinching off?
It would be a big job to pinch these back since they usually are heavily "branched." I take a scissor and give them a haircut to about four inches tall or so. This will, hopefully, initiate some new growth and blooms. Fertilize every two weeks or so (only after they are well-watered). I don't know where you live but the tremendous heat and drought we are having in Texas is making all my annuals look very worn out. Some are just going to have to be replaced.