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Plant Details

Silphium compositum

Kidney-leaf Rosinweed, Rosinweed

Scientific Name:

Silphium compositum

Genus:

Silphium

Species Epithet:

compositum

Common Name:

Kidney-leaf Rosinweed, Rosinweed

Plant Type

Herb/Wildflower

Life Cycle

Perennial

Plant Family

Asteraceae (Aster Family)

Native/Alien:

NC Native

Size:

0-1 ft., 1-3 ft., 3-6 ft., 6-12 ft.

Bloom Color(s):

Yellow

Light:

Sun - 6 or more hours of sun per day, Part Shade - 2 to 6 hours of sun per day

Soil Moisture:

Dry

Bloom Time:

May, June, July, August, September

Growing Area:

Mountains, Piedmont, Sandhills, Coastal Plain

Habitat Description:

Silphium compositum var. compositum: sandhills, other xeric forests. Common throughout NC.
Silphium compositum var. venosum: sandhills, other xeric forests. Rare in NC Coastal Plain.

Leaf Arrangement:

Alternate

Leaf Retention:

Deciduous

Leaf Type:

Leaves veined, not needle-like or scale-like

Leaf Form:

Compound

Life Cycle:

Perennial

Wildlife Value:

Has some wildlife value

Landscape Value:

Recommended and Available

Notes:

Weakley (2015) lists 2 varieties in NC: Silphium compositum var. compositum, and Silphium compositum var. venosum.

Flower

image

Flowering stalk

The flowers come atop a leafless stem that can be up to 9 ft tall.

image

Paynter, Wilmington, September, 2013

Basal leaves

The deeply indented, 4 - 12" leaves with usually reddish veins or stems are distinctive.

image

Links:

USDA PLANTS Database Record

Lady Bird Johnson Wildflower Center
Flora of North America


Bird-Friendly Native Plants



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