You may remove dead leaves and pinch of spent blossoms any time. Towards mid- to late-summer, your impatiens (which like cool weather) start to look “leggy.” Now you can pinch (cut off) the tips of them stems back 3 or 4 inches with your pruners or even your fingers. This will encourage a nice shape, too. If they’re really out of control, you can cut them back the entire plant to 6 inches off the ground in late summer and it will rebound next year. We don’t know where you live but keep in mind that impatiens have to overwinter inside if your temperature gets below 34ºF.
You may remove dead leaves and pinch of spent blossoms any time. Towards mid- to late-summer, your impatiens (which like cool weather) start to look “leggy.” Now you can pinch (cut off) the tips of them stems back 3 or 4 inches with your pruners or even your fingers. This will encourage a nice shape, too. If they’re really out of control, you can cut them back the entire plant to 6 inches off the ground in late summer and it will rebound next year. We don’t know where you live but keep in mind that impatiens have to overwinter inside if your temperature gets below 34ºF.