Kidneyleaf Rosinweed
Silphium compositum

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

Category:

Perennials

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

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

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us

Height:

4-6 ft. (1.2-1.8 m)

Spacing:

Unknown - Tell us

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)

Sun Exposure:

Full Sun

Sun to Partial Shade

Danger:

Unknown - Tell us

Bloom Color:

Bright Yellow

Bloom Time:

Mid Summer

Late Summer/Early Fall

Mid Fall

Foliage:

Herbaceous

Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us

Regional

This plant has been said to grow in the following regions:

Gainesville, Florida

Oldsmar, Florida

Murphy, North Carolina

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Jun 6, 2011, KanapahaLEW from Alachua, FL (Zone 8b) wrote:

This plant grows naturally on my property a few miles northwest of Gainesville FL. It grows in utterly dry, infertile, powdery, acid (pH = 5.7) sandy soil. It is in open areas at woods edges, getting some sun daily and being in bright shade most of the time. Despite the common name, the leaves are deeply-dissected, several occurring in a basal rosette and being 14" to 18" long, with a few scattered along the 4-foot tall flowering stalk and rapidly becoming smaller as one goes up the stalk. The large and woody taproot allows it to survive in dry soil, but reportedly the taproot is not in evidence if it grows where there is ample water available. For several weeks it produces a succession of bright yellow 2" - 2 1/2" flowers typical of Asteraceae. Propagation is by seed, which probably nee... read more