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 plants towering over the garden
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
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

Seed forming on Silphium perfoliatum
Silphium perfoliatum seed is almost ready to harvest
large perfoliate leaves of cup plant with buds forming
Perfoliate leaves of cup Plant
Cup Plant seeds campared to a quarte
Our Cup Plant Seeds
Seeds Provenance - Silphium perfoliatum - Cup Plant  - Prairie Moon Nursery, Winona, MN 2012 - Nodding Onion Gardens 2013 to present