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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)



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

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

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Where to Grow:

Grow outdoors year-round


4-6 ft. (1.2-1.8 m)


Unknown - Tell us


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


Unknown - Tell us

Bloom Color:

Bright Yellow

Bloom Time:

Mid Summer

Late Summer/Early Fall

Mid Fall



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


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

Gainesville, Florida

Oldsmar, Florida

Villa Rica, Georgia

Murphy, North Carolina

Gardeners' Notes:


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