I have ten or so butterfly bushes that I started from seed three years ago. They have been awesome the last two years and grow so much during the summer I have to trim one from blocking a fence gate. I trimmed them back pretty hard last fall, only left 6" or so above the soil, and this year some of them are getting new growth yet. Did I trim them at the right time? I could have sworn I read to do it in the fall but now I see spring when I google it. I live in zone 6 (central ky) and we have a cold winter for us, are they just being slow or could they have gotten killed? They were really hardy last season and never get watered. Appreciate the help in advance.
Note to self: don't get into a fist fight with a cactus. Command this tiny ad to do it: