Do not cut the sedum back in mid- to late-summer as the extreme heat will stress the plant, possibly killing it. In the fall, strategically prune the sedum by removing dead or diseased stems and ...

When should I prune my hydrangea? I've gotten conflicting answers ... When is a good time to divide and transplant my "Live ...

Prune coral bells in early spring to thin out ... strive to move it indoors well before the first frost develops. Leave sedum unpruned as much as possible, and avoid pruning it in the winter.