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Silphium perfoliatum (Cup plant) | NPIN
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Silphium perfoliatum (Cup plant)
Bransford, W.D. and Dolphia

Silphium perfoliatum

Silphium perfoliatum L.

Cup plant

Asteraceae (Aster Family)

Synonym(s):

USDA Symbol: sipe2

USDA Native Status: L48 (N), CAN (N)

A coarse perennial, 3-6 ft. tall with numerous large, yellow composite flowers. Each flower head has 20-30 yellow rays and darker yellow disks. Stout leaves are joined at stem to form a small cup that holds water and attracts birds.

The small cup formed by the leaves holds water and attracts birds.

 

Plant Characteristics

Duration: Perennial
Habit: Herb
Size Notes: Can grow to as much as 9 ft.
Fruit:
Size Class: 3-6 ft.

Bloom Information

Bloom Color: Yellow
Bloom Time: Jul , Aug , Sep

Distribution

USA: AL , AR , CT , GA , IA , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , NC , ND , NE , NJ , NY , OH , OK , PA , SD , TN , VA , VT , WI , WV
Canada: ON
Native Distribution: S. Ont. to NC, w. to e. Great Plains
Native Habitat: Moist woods; prairies; low ground

Growing Conditions

Light Requirement: Sun
Soil Moisture: Dry , Moist , Wet
Drought Tolerance: High
Soil Description: Wet to mesic soils. Will tolerate clay soil.
Conditions Comments: Unstoppable urge to reproduce, they will pop up everywhere; very little care needed.

Benefit

Use Wildlife: Attracts birds for seed.
Conspicuous Flowers: yes
Attracts: Butterflies , Hummingbirds
Nectar Source: yes

Value to Beneficial Insects

Special Value to Native Bees
Special Value to Bumble Bees
Special Value to Honey Bees
Provides Nesting Materials/Structure for Native Bees
Supports Conservation Biological Control

This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.

Propagation

Description: Most easily propagated by seed. Sow unstratified seed in spring or stratified in fall. Deep roots make it difficult to transplant but young offshoots from parent plant can be removed and planted.
Seed Collection: Seeds can be allowed to dry out before sowing. Collect in Sep. and Oct.
Seed Treatment: This species requires or benefits from a three month period of cold moist stratification in the refrigerator.
Commercially Avail: yes

Find Seed or Plants

Find seed sources for this species at the Native Seed Network.

View propagation protocol from Native Plants Network.

From the National Suppliers Directory

According to the inventory provided by Associate Suppliers, this plant is available at the following locations:

Edge of the Woods Native Plant Nursery - Orefield, PA
Ohio Prairie Nursery - Hiram, OH
American Native Nursery - Quakertown, PA
Prairie Nursery - Westfield, WI

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Texas Discovery Gardens - Dallas, TX
Native Seed Network - Corvallis, OR
* Available Online from Wildflower Center Store

Bibliography

Bibref 928 - 100 easy-to-grow native plants for Canadian gardens (2005) Johnson, L.; A. Leyerle
Bibref 946 - Gardening with Prairie Plants: How to Create Beautiful Native Landscapes (2002) Wasowski, Sally
* The Midwestern Native Garden: Native Alternatives to Nonnative Flowers and Plants An Illustrated Guide (2011) Adelman, Charlotte and Schwartz, Bernard L.

Search More Titles in Bibliography

Recommended Species Lists

Find native plant species by state. Each list contains commercially available species suitable for gardens and planned landscapes. Once you have selected a collection, you can browse the collection or search within it using the combination search.

View Recommended Species page

Additional resources

USDA: Find Silphium perfoliatum in USDA Plants
FNA: Find Silphium perfoliatum in the Flora of North America (if available)
Google: Search Google for Silphium perfoliatum

Metadata

Record Modified: 2012-12-09
Research By: TWC Staff

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