Silphium compositum

Common Names

Kidney-Leaf Rosinweed, Rosinweed

Summary

Kidney-leaf rosinweed is a native perennial wildflower in the Asteraceae family that occurs in the southeastern United States, growing 2–8 ft tall and 2–4 ft wide with a large basal rosette of leaves and a tall flowering stalk rising above the foliage, leaves are alternate, simple, kidney-shaped with lobes and distinctive red or purple leaf veins, flower heads carry 7–20 bright yellow ray flowers and bloom from late spring through early fall, it tolerates drought and develops a long taproot, thriving in dry forests, woodlands, road banks, and longleaf pine sandhills, with full sun to partial shade and well-drained soils, for cultivation it self-seeds readily and prefers full sun to partial shade with well-drained, medium-moisture soils while avoiding poorly drained or wet conditions, transplanting is difficult due to the long taproot, hardiness encompasses zones 7–9, it serves as a nectar and pollen source for bees and butterflies and provides seeds for birds, making it suitable for wildflower gardens or back borders in native landscape plantings

Lifecycle

Perennial

Height

4-6 feet

Spread

24 inches-4 feet

Hardiness Zones

Zones 7-9

Sunlight Requirements

Ideally Full Sun to Partial Shade.

Soil Type

Well-drained soil

Soil Drainage

Well-drained soil

Soil pH

Tolerates all pH levels

Bloom Color

Yellow with reddish disks

Bloom Time

Spring, Summer, and Fall

Foliage Color

Dark green

Leaf Lifecycle

Deciduous

Growth Rate

Rapid

Seasons of Interest

Spring, Summer, Fall

Propagation Methods

Seeds

Attracts Wildlife

Attracts bees, butterflies, other pollinators, birds