I've got 5 butterfly bushes. 4 of them were planted last fall. 1 is 4 years old. Due to the last big deep freeze, all of the new leaves have frozen and fallen off. All of them. On top of that, some of the branches on the newer plantings are brittle and just snap off. I pruned them heavily in early spring which is what I've done to the established one for the past 3 years. Do I wait and see what happens with them or do I just chalk it up to winter kill and buy 5 new ones?
Michael