The name comes from its large, opposite leaves that join at the stem to form a “cup”, which collects rainwater.
The leaf “cups” hold rainwater, attracting birds, bees, and insects that drink from them.
This feature also inspired its common name and makes it a fascinating plant for wildlife gardens.
Spreads by rhizomes, forming large colonies—great for naturalized plantings but needs space.
Goldfinches and other birds feed on its seeds in fall.
Historically used by indigenous people for medicinal purposes.
The name comes from its large, opposite leaves that join at the stem to form a “cup”, which collects rainwater.
The leaf “cups” hold rainwater, attracting birds, bees, and insects that drink from them.
This feature also inspired its common name and makes it a fascinating plant for wildlife gardens.
Spreads by rhizomes, forming large colonies—great for naturalized plantings but needs space.
Goldfinches and other birds feed on its seeds in fall.
Historically used by indigenous people for medicinal purposes.
Bloom: early to mid-summer
Habitats: along ditches near railroads; fence rows; fens and seeps; lake borders; low-lying woodland edges and thickets; moist black soil prairies; moist meadows near rivers
Lifespan: perennial
Moisture: moist
Plant type (height): forb (4 to 10 feet)
Requirements: full sun to partial sun
Soil: loam
