Silphium perfoliatum

Cup Plant

Silphium perfoliatum

Description

The Cup Plant is a tall, herbaceous perennial native to North America. It is known for its large leaves that join around the square stem to form a cup, which can collect rainwater, hence its common name. The plant produces bright yellow sunflower-like blooms and can attract a variety of pollinators, including bees and butterflies.
Life Cycle
perennial
Height
4 to 10 feet
Sun Exposure
Partial sun to full sun
Bloom Months
July, August, September
Bloom Color
Bloom Description
The Cup Plant has bright yellow flowers that resemble small sunflowers.