Black-eyed Susans (Rudbeckia) and coneflowers (Echinacea) are two more plants that David recommends you should avoid deadheading due to their seedheads. 7. Globe thistles Globe thistles (Echinops ...

Sedum, rudbeckia, echinacea, helenium and golden rod will all respond well to this technique. Lightly shearing over aubrieta, lavender and alyssum after flowering combines deadheading with light ...