My sedum are monsters. I have three of them. The are about 3 feet tall and three feet diameter. They are so heavy that they've started to separate in the middle. If I were to trim them back in June or July would they still bloom in September? but not be so tall and leggy?
Same with the cone flowers. This year one of them fell over it was so big and full of blossoms. I tied it to the fence but it just leaned over onto the rest of the plant. The bloom still came but the foliage didn't look so hot. If I were to trim it back in the spring or early summer would it become bushier and wider at the base?
Also...I lost my caryopteris this spring and I think it may have had something to do with the time of year it was pruned back. I've heard lots of them die regardless. I have the new one and about 6 babies from the one last year. Would you prune it fall, after the first hard frost or in spring?