phlox drummondii deadheading
I have grown these for the first time and they are lovely. Now deadheading but not sure where to cut back to ensure more flowers. I have only cut the actual flower head so far should I cut further back?
Cut the stem back to just above a pair of leaves. The new buds will come from the leaf axils. If you cut higher up, they will still sprout, but you have bits of stem sticking up.
You don't stop doing new things because you get old, you get old because you stop doing new things.