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Silphium perfoliatum

Cup Plant

Bright yellow, daisy-like flowers are accented by the green foliage.

  • »  Bright yellow daisy-like flowers
  • »  Coarsely-toothed bristly oval green leaves are 20 cm long
  • »  Leaves are opposite each other and join together at stem to cup water
  • »  Sturdy central stem is hairless and square
  • »  Upright, clumping habit
  • »  Bloom Time: June to August
  • »  Flower Size: 10 cm

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  • Category:Perennials
  • Hardiness Zone:4
  • Height:150-250 cm
  • Spread:75-90 cm
  • Bloom Color: Yellow
Exposure
• Full Sun
• Partial Sun/Shade
Soil Moisture
• Moist to Average
Growth Rate
• Fast
Attributes
• Native to Ontario
• Drought Tolerant
Flowering Time
• Summer
Habit
• Clumping
• Upright
Foliage Color
• Green
Landscape uses
• Bog or water garden
• Naturalizing
• Roadside planting
• Woodland/woods edge
Planting instructions
• Container Plants
Additional Information about Silphium perfoliatum

Native to Ontario

Growing & Maintenance Tips for Silphium perfoliatum

Easily grown in an average garden soil, it is able to withstand heavier, wetter conditions under certain conditions and may drop some of its lower leaves with continued drought.