Cup Plant (Silphium perfoliatum)

  • Cup Plant (Silphium Perfoliatum)
    Credit: Forest & Kim Sta... | Plants of Hawaii, Image 990106-3122 from | License: PD-user
  • Cup Plant (Silphium Perfoliatum)
    Credit: Forest & Kim Sta... | Plants of Hawaii, Image 990106-3122 from | License: PD
  • Cup Plant (Silphium Perfoliatum)
    Credit: NRCS National Wetland Team, Fort Worth, TX. | Wetland flora: Field office illustrated guide to plant species | License: PD USDA NRCS
  • Cup Plant (Silphium Perfoliatum)
    Credit: Britton, N.L., and A. Brown | An illustrated flora of the northern United States, Canada and the British Possessions. Courtesy of Kentucky Native Plant Society. | License: PD USDA NRCS
  • Cup Plant (Silphium Perfoliatum)
    Credit: Paolo Fisicaro | Photo | License: CC-BY-SA-3.0-migrated GFDL

Silphium Perfoliatum, or more commonly know as Cup Plant, is a forb/herb (a forb/herb is a non-woody plant that is not a grass) of the genus Silphium. It has a height of 6 feet at maturity. Its duration is perennial which means it will grow year after year. Silphium Perfoliatum or Cup Plant's floral region is North America US Lower 48

  • Category: Dicot
  • Genus: Silphium
  • Family: Asteraceae
  • Order: Asterales
  • Class: Magnoliopsida
  • Division: Magnoliophyta
  • Duration: Perennial
  • Growth Habit: Forb/herb
  • Native Status: L48 (N) CAN (N)
  • State Noxious Status: CT (PIB)
  • State Noxious Common Name: CT (cup plant)
  • PLANTS Invasive Status: STATE
  • State T/E Status: MI (T)
  • State T/E Common Name: MI (cup-plant)
  • National Wetland Indicator Status: FACU FACW
  • Regional Wetland Indicator Status: 1(FACU) 2(FAC+) 3(FACW-) 4(FACW) 5(FAC) 6(NI)
  • Allelopath: No
  • Coppice Potential: No
  • Fall Conspicuous: No
  • Fire Resistance: No
  • Flower Color: Yellow
  • Flower Conspicuous: Yes
  • Fruit/Seed Conspicuous: No
  • Height at 20 Years Maximum (feet): 8
  • Height Mature (feet): 6
  • Leaf Retention: No
  • Low Growing Grass: No
  • Resprout Ability: No
  • Adapted to Coarse Textured Soils: Yes
  • Adapted to Fine Textured Soils: Yes
  • Adapted to Medium Textured Soils: Yes
  • Cold Stratification Required: No
  • Frost Free Days Minimum: 128
  • pH (Minimum): 4.5
  • pH (Maximum): 6.5
  • Precipitation (Minimum): 16
  • Precipitation (Maximum): 51
  • Temperature Minimum (°F): -49
  • Fruit/Seed Persistence: No
  • Propagated by Bare Root: No
  • Propagated by Bulbs: No
  • Propagated by Container: No
  • Propagated by Corms: No
  • Propagated by Cuttings: No
  • Propagated by Seed: No
  • Propagated by Sod: No
  • Propagated by Sprigs: No
  • Propagated by Tubers: No
  • Small Grain: No

Browse Plants by State

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