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Helianthus, False Sunflower, Perennial Sunflower, Thin-Leaved Sunflower 'Flore-Pleno'

Helianthusdecapetalus

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Family

Asteraceae (ass-ter-AY-see-ee)

Info

Genus

Helianthus (hee-lee-AN-thus)

Info

Species

decapetalus (dek-uh-PET-uh-lus)

Info

Synonym

Helianthus multiflorus

Sun Exposure

Full Sun

Foliage

Herbaceous

Height

24-36 in. (60-90 cm)

36-48 in. (90-120 cm)

Spacing

15-18 in. (38-45 cm)

Hardiness

USDA Zone 4a: to -34.4 °C (-30 °F)

USDA Zone 4b: to -31.6 °C (-25 °F)

USDA Zone 5a: to -28.8 °C (-20 °F)

USDA Zone 5b: to -26.1 °C (-15 °F)

USDA Zone 6a: to -23.3 °C (-10 °F)

USDA Zone 6b: to -20.5 °C (-5 °F)

USDA Zone 7a: to -17.7 °C (0 °F)

USDA Zone 7b: to -14.9 °C (5 °F)

USDA Zone 8a: to -12.2 °C (10 °F)

USDA Zone 8b: to -9.4 °C (15 °F)

USDA Zone 9a: to -6.6 °C (20 °F)

USDA Zone 9b: to -3.8 °C (25 °F)

Danger

Unknown - Tell us

Bloom Color

Bright Yellow

Bloom Time

Late Summer/Early Fall

Mid Fall

Other Details

Gardener's Notes:

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ellen505

Merion Station, PA | September 2007 | positive

I planted three 4-inch tall seedlings this spring. Today they are 5 feet tall nonstop flowering machines. The leaves are deep green and...Read More

lmelling

Ithaca, NY (Zone 5b) | January 2005 | positive

Clump forming, fast growing with lance-shaped to ovate, slightly hairy, dark green leaves that can get up to 8" long. Flowerheads are do...Read More

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Helianthus, False Sunflower, Perennial Sunflower, Thin-Leaved Sunflower 'Flore-Pleno'

Helianthusdecapetalus

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