SILPHIUM perfoliatum (Cup Plant)

In stock
$40.00
Cup plant, or Silphium perfoliatum, is a small, sunflower-like Missouri native plant that grows in low woods and thickets, meadows, prairie stream/pond peripheries, and along railroad tracks throughout the state. In full sun, it grows easily in average, mild to wet soils. When grown from seed, it takes a long...
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Cup plant, or Silphium perfoliatum, is a small, sunflower-like Missouri native plant that grows in low woods and thickets, meadows, prairie stream/pond peripheries, and along railroad tracks throughout the state. In full sun, it grows easily in average, mild to wet soils. When grown from seed, it takes a long time to develop. In ideal growing conditions, it self-seeds.

Number of Seeds Max Coverage Area (Square Ft.)
0.5OZ 1063 38
1OZ 2,125 75
1/4LB 8,500 300
1/2LB 17,000 600
1LB 34,000 1,200
5LB 170,000 6,000

Scientific Name: Silphium Perfoliatum

Common Name: Cup Plant

Plant Type: Perennials

Family: Silphium

Zone: 3 to 9

Native Range: Eastern North America

Full Growth Height: 48-96 "

Width in Across: 12-36 "

Exposure: Full Sun

Blooming Season: Summer (Mid, Late), Fall

Flower Characteristics: Showy, Plant of Merit

Pollinators: Butterflies, Birds

Flower Color: Deep Yellow

Tolerate: Drought, Wet Soil, Clay

Water Requirement: Medium

Maintenance: Low

Soil Type: Chalk, Loam, Well-Drained, Moist

Soil pH: Neutral, Alkaline, Acid

Uses: Beds and Borders, Prairies and Meadows, Informal and Cottage

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