The open plant encyclopedia
Snap a photo or search by any name to see how to care for it, where it comes from, whether it's safe, and a 3D model you can turn.
The plants people record most in your country, and ones that grow there wild.
Filter by what you want to do, shape, origin, country, care and safety.
Silphium perfoliatum
Also called Indian Cup Plant, Indian Gum, Cup Leaved Rosinweed, Cupleaf Rosinweed, Silphie, Silphium, Squarestem Rosinweed
Cup plant is a tall, erect North American perennial in the daisy family with square stems and leaves that clasp the stem to form a cup that holds rainwater. It grows best in sunny, moist soil and produces yellow daisy-like flowers in summer.
Silphium perfoliatum, the cup plant or cup-plant, is a species of flowering plant in the family Asteraceae, native to eastern and central North America. It is an erect herbaceous perennial with triangular toothed leaves, and daisy-like yellow composite flower heads in summer.
The specific epithet perfoliatum means "through the leaf."
Text excerpted from the Wikipedia article Silphium perfoliatum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
