WSU Clark County Extension
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Perennial Sunflower

Scientific name: Helianthus multiflorus 'Flore-pleno’
Taxonomy
Family:Asteraceae
Type:Herbaceous perennials
Native:NO
Plant Requirements
Zone:4 to 10
Plant Characteristics
Height:5 ft
Width:4 ft
Bloom:Summer flowers
Bloom Time:June to September
Bloom Color:Yellow
Additional Characteristics
Trees


Fruit

Leaves


Bark
Wildlife value

Poisonous
Description Bearing a profusion of bright yellow, chrysanthemum-like flowers, perennial sunflower is valued for its drought tolerance and longevity.

  Morphology:
Growing to a height of 4' or more and a spread of 3.5’, this cultivar of perennial sunflower bears bright yellow double-petal flowers from June through August. The plant has ovate leaves, which along with the stems are hairy.

  Adaptation:
Hardy perennial that does well on all sites. It can be grown in either full sun or partial shade. If the spent bloom is removed the plants will continue to bear well over the entire summer. Divide every 2-3 years. Best situated in the back of the perennial garden due to its eventual height.

  Pests:
None reported.
For assistance, contact Dr. Charles Brun (brunc@wsu.edu), (360) 397-6060 5701
Computing and Web Resources, PO Box 6234, Washington State University, Pullman WA 99164-6234