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Helianthus Species, Blueweed Sunflower, Texas Blueweed

Helianthusciliaris

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Family

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

Info

Genus

Helianthus (hee-lee-AN-thus)

Info

Species

ciliaris (sil-ee-AIR-iss)

Info

Synonym

Helianthus angustifolius subsp. ciliaris

Sun Exposure

Full Sun

Foliage

Herbaceous

Succulent

Height

12-18 in. (30-45 cm)

18-24 in. (45-60 cm)

Spacing

12-15 in. (30-38 cm)

Hardiness

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

Mid Summer

Late Summer/Early Fall

Other Details

Gardener's Notes:

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positive

neutral

negative

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cherishlife

Pocola, OK (Zone 7a) | November 2004 | negative

According to the USDA website, this plant is considered a noxious weed in several states.

Arizona:
Te...Read More

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Helianthus Species, Blueweed Sunflower, Texas Blueweed

Helianthusciliaris

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