Dianthus gratianapolitanus ‘Pixie’ Needs Serious Attention
Due to last year's hot wet weather, my Dianthus now have an underbrush of dead foliage but the tops are still green. They are densly populated. I am thinking of shearing the undergrowth to save the plants as I have about 150 of them. Would this be advisable?
Certified GKH Gardening Expert
You can cut them back by about 1/2. This should encourage lower branching are refoliation.