Nodding Onion Gardens

Native Plant Nursery

Where Wildflowers Grow

Columbia Station, Ohio, USA

 

 Silphium perfoliatum - Cup Plant



Ohio Native Plant - Natural Range

Silphium perfoliatum

Visit the USDA Natural Resources Conservation Service website for a map of the natural range of the Cup Plant
bee on huge yellow flower of the Cup Plant
Cup Plant a native perennial sunflower
Wildlife Significance

Host Plant - Silphium Moth


Water - Perfoliate leaves hold water for a wide variety of wildlife


Pollen - bumble bees, green sweat bees, sweat bees, long horned bees and leafcutter bees


Nectar - Wasps, bee flies, various short-tongued bees along with butterflies and skippers


Aphid Predators - Both Lady beetles and Brown Lacewing inhabit the leaves of the Cup Plant, both devour pesty aphids.

Katydids - Camouflage is the name of their game, but take a close look and you might discover a katydid munching on the Cup Plant's thick green leaves

Seed - Birds - Chickadees, Goldfinches, sparrows along with a host of other songbirds frequent Cup Plant plant

For more details visit the Illinois Wildflower website.

Two Goldfinches hanging up side down on a Cup Plant
Finches love the seed from Cup Plants - Paula & Ken Korber
Seeds Provenance - Silphium perfoliatum - Cup Plant  - Prairie Moon Nursery, Winona, MN 2012 - Nodding Onion Gardens 2013 to present
Cup Plant growing in a rain garden
Cup Plant growing in a Rain Garden
Cultivation Information - Cup Plant
Height - 3 to 8 ft
Flower Color -  Yellow
Blooms - July - Sept
Sun - Sun

Hardy Zone - 4 to 8

Soil -  Moist to wet
pH - 6.1 to 7.4

Natural Fence - A mature grove of Cup Plants are perfect native plants for "green" privacy fences

Family - Asteraceae

Cup plant beginning to flower
Flower buds forming on Silphium perfoliatum
Seed forming on Silphium perfoliatum
Silphium perfoliatum seed is almost ready to harvest
Cup Plant seeds
Our Cup Plant Seeds