Water: Medium to high water needs; thrives in moist to wet soils
Soil: Prefers rich, well-drained loamy or silty soils but adapts to clay and poorly drained soils
Height: 6-10 feet
Bloom Time: Mid-summer to early fall
Lifespan: Perennial
Growth Habit: Upright and clump-forming
Additional Information: Cup Plant is a distinctive prairie wildflower named for its large, opposite leaves that fuse at the base to form a "cup," which collects rainwater. This feature provides a water source for birds and insects, enhancing its ecological value. The tall stems are topped with clusters of bright yellow, daisy-like flowers that attract a wide variety of pollinators, including bees and butterflies. Silphium perfoliatum thrives in moist meadows, along streambanks, and in rain gardens, where its deep roots help stabilize soil and improve water infiltration. Its bold structure and ecological benefits make it a standout in native landscapes and prairie restorations.
