Silphium perfoliatum

Cup Plant, Rosinweed

Family: Asteraceae Aster


Type Perennial
USDA Hardiness range 3A - 7A
Exposure Partial shade to full sun
Bloom color Yellow
Bloom time Mid Summer to Early Fall
Water needs Moist to wet
Landscape uses Border, massing, specimen, woodland garden
Height 36" to 5' / 90cm to 1.60m
Spread 24" to 36" / 60cm to 90cm
Growth rate Moderate
Persistence Deciduous, broadleaf
Bloom attributes Attracts butterflies
Leaf color Green
Fruit color n/a
Soil pH requirements Neutral
Soil type Sandy, loamy
Form Upright or erect
Attributes and features Attracts birds, attractive foilage, native to North America, invasive, naturalizing