Helianthus Species, Muck Sunflower, Swamp Sunflower, Tall Narrow-Leaved Sunflower
Helianthussimulans

Category
Perennials

Water Requirements
Average Water Needs; Water regularly; do not overwater

Sun Exposure

Foliage

Foliage Color

Height
8-10 ft. (2.4-3 m)

Spacing
24-36 in. (60-90 cm)
36-48 in. (90-120 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)
USDA Zone 9b: to -3.8 °C (25 °F)

Where to Grow

Danger

Bloom Color
Pale Yellow

Bloom Characteristics
Flowers are good for cutting

Bloom Size

Bloom Time
Mid Summer

Other details
May be a noxious weed or invasive

Soil pH requirements

Patent Information

Propagation Methods

Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Remove fleshy coating on seeds before storing
Properly cleaned, seed can be successfully stored