Silphium perfoliatum
Cup Plant

A robust long-lived species; best established by planting in the fall as a dormant seeding, with germination occurring in the spring; may be used as forage for domestic animals with multiple cuts; high potential as a bioenergy crop; provides food for birds and wildlife.

General Product Information:

Item Number: SILPER01
Species Type: Native
Product Categories:
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Classification: Herbaceous Perennial
Characteristics: Large leaves; thick stems.
Habitat: Floodplains, abandoned fields, moist meadows.
Bloom Period: July to September
Flower Color: Yellow
Foliage Color: Green
Height: Up to 8.1 Ft
Minimum Root Depth: 12 in
pH: 4.5 – 7.5
Pollinator Value: High

Indicator Regions (view map & key):

Northcentral & Northeast: FACW
Midwest: FACW
Eastern Mountains and Piedmont: FAC
Atlantic and Gulf Coastal Plain: FAC


Shade: Moderate
Drought: Low
Salt: No

Seed Information:

Approximate seeds per lb: 100,000
Seeding Rate: When used as part of a mix, ensure that the mix consists of not less than 0.5% and not more than 1.0% of the total.
Truax Seedbox: Fluffy



Price: $132.00/lb

This species is included in the following Ernst Seed Mixes

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