Silphium perfoliatum
Silphium perfoliatum or cup plant is a dramatic perennial with towering 6-8 feet tall stems with bright yellow daisies.
Silphium perfoliatum is known as cup plant due to the large leaves that clasp the stem and catch rain water. It is a dramatic perennial with large leaves and towering stems that can reach 6-8 feet tall with bright yellow daisies in summer and fall. Birds and insects use the collected water for a source of drinking water. Insects enjoy the nectar of the flowers and birds will eat the resultant seeds.
Common Name: Cup Plant
Family: Asteraceae (The Asteraceae Family)
Zone Hardiness: 3-9
Light: Full Sun, Part Sun
Height: 6-10'
Width: 12-24"
Primary Bloom Colour: Yellow
Secondary Bloom Colour: Yellow
Bloom Time: Summer
Foliage Colour: Green
Class: Deciduous
Type: Perennial
Soil Moisture: Average, Moist
Stem Colour:
Fragrance: No
Berries:
Benefits: Butterflies
Deer Resistant: Unknown
BC Native: No
Native Habitat: Sandy moist bottom lands, floodplains, ditches, near streams and in open woodlands, forest edges, and fields in Ontario and Quebec and across much of the central and eastern US.
Award: AGM
Geographical Origin: North America
