Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Helianthus (hee-lee-AN-thus) (Info)
Species: angustifolius (an-gus-tee-FOH-lee-us) (Info)
Cultivar: Mellow Yellow
 One vendor has this plant for sale.
Category:
Perennials
Height:
6-8 ft. (1.8-2.4 m)
Spacing:
9-12 in. (22-30 cm)
Hardiness:
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)
Sun Exposure:
Full Sun
Danger:
Unknown - Tell us
Bloom Color:
Bright Yellow
Bloom Time:
Mid Fall
Late Fall/Early Winter
Foliage:
Herbaceous
Other details:
May be a noxious weed or invasive
This plant is attractive to bees, butterflies and/or birds
Requires consistently moist soil; do not let dry out between waterings
Very high moisture needs; suitable for bogs and water gardens
Self-sows freely; deadhead if you do not want volunteer seedlings next season
This plant is resistant to deer
Soil pH requirements:
Unknown - Tell us
Patent Information:
Unknown - Tell us
Propagation Methods:
By dividing the rootball
From seed; direct sow outdoors in fall
From seed; direct sow after last frost
Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
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