How to Prepare Delphinium for Winter
Should delphinium be cut back hard in the fall or left alone? I'm never sure how to handle perennials in the fall, "to cut or not to cut, that is the question"! I hate looking at dead plant matter but don't want to have to replace the plants cause of a "neat attack" of cutting.
Certified GKH Gardening Expert
You can remove old growth in fall after frost or before new growth begins in spring. This is entirely up to you.