Cutting down perennials for a second crop of flowers
I have a lovely clump of Astrantia Roma and when the flowers had gone over in early July I cut off all the flowering stalks, hoping for a second crop. Now I'm wondering whether I should have cut down all the foliage as well. What do you think?
The other plants I'm not sure what to do with, are scabiosa caucasica, which have been blooming for several weeks, but look to be producing very few more buds. How low should I cut them down?