Cup Plant | Silphium perfoliatum
Seeds are sold by the packet.
Seed orders are shipped when order is received.
Each packet of Cup Plant contains 40 seeds.
Price: Seed $ 2.50
Plant Species Synonym Names
Aster - Asteraceae
See more images Cup Plant Detail
This cool plant has large leaves that form cups around the square stems of the plant. These cups hold water after it rains making good drinking spots for birds. The plants are very sturdy and do not flop.
Growth Habit:Herb: Herbs are broad-leaved, herbaceous (non-woody) plant. Herbaceous plants are also known as forbs or wildflowers
Grass: Grasses are herbaceous plants with narrow leaves originating at the base of the plant. Grasses are graminoids.
Tree: Trees are woody perennial plants, usually with a single trunk, relatively tall
Shrub: Shrubs are woody perennial plants with multiple stems, generally shorter than a tree.
Vine: Vines are either woody or herbaceous plants that climb or sprawl.
Life Span:Annual: Annuals are herbaceous plants that live only one year
Biennial: Biennials are herbaceous plants that live two years, flowering the second
Perennial: Perennials are herbaceous plants that live three or more years
Woody: Woody plants have woody stems that grow more than a year.
Mature Height: 8.0'
Mature Width: 3.0'
Flower Color: Yellow
Water Requirement:Wet: Soil is soggy or marshy
Moist: Soil tends to stay moist and rarely dries out
Medium: Average soil moisture, little or now slope
Drained: Soil is well drained, never soggy; medium slope
Dry: Soil is dry, often typical of rocky soil; steep slope
Moist to Medium