Native Plant Database

Callicarpa americana. Photo: Mervin Wallace

Cup Plant

Silphium perfoliatum
Plant Type: Herbaceous Perennials
Native Environment: Prairie, Wetland, Stream Edge
Season of Interest:
Main Color: Yellow
Fall Color:
Hardy From Zone:
Hardy To Zone:
Sun Exposure 
Full Sun
Soil
Moisture
Dry, Moderate, High, Wet
Nature Attracting
Wildlife Benefit
Butterfly / Moth Nectar
Animal
Resistance
Size

Height:

7 to
10
feet

Spread:

3 to
5
feet
Size
Height: 7 to
10
feet
Spread: 3 to
5
feet
Size
Height: 7 to
10
feet
Spread: 3 to
5
feet
Typical Landscape Use
This is a large bold plant that brings form and texture to the landscape. Use as a focal point in perennial gardens, native plant gardens and in prairies and moist areas.
Establishment and Care Instructions
Grow in full sun. Adaptable and highly aggressive, clump-forming.
Basic Description

This plant is distinguished from other Silphiums by its square stems and pairs of cup-forming leaves that hold water. Soft yellow flowers grow 3 in. in diameter with darker yellow center disks. Plants bloom in summer at the top of stout stems.

Special Features
Special Usage

Where Should I Start?

Check out the Grow Native! Committee’s Top Ten picks of native plants for a particular purpose.

What’s the Next Step?

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Where Can I Find This Plant in Nature?

Learn about the Native Environment(s) inhabited by the plants in this database.

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