I have several very large beautiful dianthus--they've spread out quite a bit-about 18-24" across and the buds are very plentiful (I'd say there are probably almost 100 buds on each plant--no joke!!) My problem is that they are so tall (around 12") that they are leaning over onto the ground. Some have bloomed and some are just ready to bloom. When I put them in last year, they bloomed over and again--but were not this wide or tall. They made it through the rough NE Ohio winter and seem to have exploded!
I know I need to cut them back, but am just not sure what I can do with them right NOW?! I don't know when is the best time, height, etc to cut them back (or to divide them? and HOW to divide them?) OR where on the stem to cut them?
this is my first post and I couldn't find an answer in search, so I thought I'd just ask! Any and all help will be greatly appreciated. I really love these plants, and want to do what's going to work best.