Basic Deadheading Methods
The removal of old or spent flowers is called deadheading. The amount
of material to remove is based on the appearance of the plant. The key thing to
look for when deadheading is the presence of new buds or flowers. Cut back to
something that looks good, like a green leaf. The plant will look best if
material is removed at a node or joint where a lead or bud will grow. If the old
flower is simply pinched off, a long dried stem will exist up to the next node.
When all flowers are spent, the plant can be cut to its basal foliage.
Diagram locations A - D:
A - OK to deadhead here if no buds are present.
B - Best place to deadhead if bud is present so leaves
don't cover blooms.
C - Some plants are cut in half after flowering to promote
D - Cut to basal leaves when all flowers are spent.
Plants to Shear
Coreopsis verticillata 'Moonbeam' - can be sheared in August to remove
deadheads along with the few flowers that may be blooming at the time if needed.
Nepata faassenii 'Walkers Low' - Shear and shape by 2/3 after
flowering to keep it from falling over other perennials and to induce lush new
foliate and rebloom.
Hemerocallis 'Happy Returns' (Daylilly) - grab and pull the dead
leaves out by hand.
Stachys byzantina - needed periodically throughout the summer to
remove rotted or generally declined foliage. Leaves snap off easily with sharp
thumbnail. Cut back any large section of the plant that may have rotted.
Plants that Do Not Require Deadheading, Deadleafing, Shearing, or
Artemisia 'Silver Mound'
Aster novi-belgii 'Purple Dome'
Perovskia atriplicifolila (Russian Sage)
Sedum 'Autumn Joy'