Silphium Species, Kidneyleaf Rosinweed
Silphiumcompositum

Family: Asteraceae (ass-ter-AY-see-ee)
Genus: Silphium (SIL-phee-um)
Species: compositum (kom-POZ-ee-tum)

Synonym:Silphium lapsuum

Synonym:Silphium orae

Synonym:Silphium ovatifolium

Synonym:Silphium reniforme

Synonym:Silphium venosum

Category
Perennials

Water Requirements
Drought-tolerant; suitable for xeriscaping

Sun Exposure
Full Sun
Sun to Partial Shade

Foliage
Herbaceous

Foliage Color

Height
4-6 ft. (1.2-1.8 m)

Spacing

Hardiness
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
Grow outdoors year-round in hardiness zone

Danger

Bloom Color
Bright Yellow

Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds

Bloom Size

Bloom Time
Mid Summer
Late Summer/Early Fall
Mid Fall

Other details

Soil pH requirements

Patent Information

Propagation Methods

Seed Collecting