What is it?
Cut off the heads of the dead blooms, immediately below the stem of the spent flowers.

Why do you do it?
To prolong the blooming time of your perennial plant, deadhead some plants. For example, if you deadhead Campanula persicifolia, it will bloom June through July. Platydcodon will bloom, if deadheaded, July through August. [They also go well together, for a whole summer of color in your garden.] Campanula carpatica will bloom from June to September, if you deadhead it.

When do you do it?
Cut just after the flower is finished blooming. You cut to avoid the formation of seeds and to make the plant produce more flowers, in an attempt ‘to go to seed.’ For example, you can get three rounds of bloom from your Aquilegia [Columbine], extending the cycle of color from May through June.

Where do you do it?
Cut immediately under the base of the spent flower. Be careful, since there is frequently a bud right under that dead bloom.

Which plants can be deadheaded?
These plants produce more flowers, immediately or later in the season:
Achillea [Yarrow]
Adenofera [Ladybells]
Aquilegia [Columbine]
Campanula [Bellflower]
Centaurea [Perennial Bachelor’s Button]
Dianthus [Pinks]
Dicentra eximia, formosa, Luxuriant & Zestful [ferny bleeding heart] [deadhead whole stem]
Delphinium [deadhead whole stem, after bloom]
Echinacea [purple cone flower]
Gaillardia [Blanket Flower]
Gypsophila [Baby’s Breath]
Heuchera [Coral bells] [deadhead whole stem, after bloom]
Liatris [Gayfeather]
Leucanthemum [Shasta Daisies]
Lychnis [Catchfly]
Malva [Mallow]
Monarda [Bee balm]
Phlox paniculata [Summer phlox]
Platycodon [Balloon Flower]
Rudbeckia [Black-eyed Susan]
Salvia [Meadow Sage] [deadhead whole stem, after bloom]
Scabiosa [Butterfly blue and pink]
Sidalcea [Prairie Mallow]
Veronica [Spike Speedwell] [deadhead whole stem, after bloom ]

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