Tennessee Smart Yards Native Plants

A comprehensive database of Tennessee native plants

Cup Plant

Cup Plant

Silphium perfoliatum

Full to part sun, moderately wet to medium moisture level, prefers rich soil but is adapted to wide range of soils including clay, very strongly acid to neutral pH.  5-8 feet height, blooms in summer, yellow flowers, will freely self-seed in optimum conditions.

Germination Code:  C(60)

Native Region:  Western half of Tennessee

Coarse, sunflower-like plant.  Leaf cups will collect rainwater.  Species is also sometimes called Cup Rosinweed because its stems exude a gummy sap when cut.  High drought tolerance.  Can be invasive with an “unstoppable urge to reproduce.”  Attracts birds, butterflies, hummingbirds and bees.

flower;sun;wet;clay
flower;sun;wet;loam
flower;sun;wet;sand
flower;sun;medium;clay
flower;sun;medium;loam
flower;sun;medium;sand
flower;sun/shade;wet;clay
flower;sun/shade;wet;loam
flower;sun/shade;wet;sand
flower;sun/shade;medium;clay
flower;sun/shade;medium;loam
flower;sun/shade;medium;sand

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