Location specific values:
Array
(
    [lat] => 31.566670
    [lng] => 130.550000
    [elevation] => 4.8587
    [rainfall] => 2286.9992
    [cold_temperature] => 3.3
    [temperature] => 31.4
    [user_eto] => 1009.39944468
)

Plant specific values:
Array
(
    [rain_min_irrigation] => 990
    [eto_corrected] => 898
    [eto_adjusted_rain_min (rain_min_irrigation / eto_corrected)] => 1.03786191
)
Cup Plant (Silphium perfoliatum) | Easyscape Plant Profile

Cup Plant

(Silphium perfoliatum)

Cup Plant (Silphium perfoliatum)

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Estimated Native Range
Species Map Help

Climate Requirements for Kagoshima, Japan

This Plant Your Site Plant Suitability for Your Location
• Precipitation 15" - 83" 90" Aquatic Aquatic
• High Temp. 64°F - 94°F 89°F Your summer temperatures are normal for this plant. Excellent
• Low Temp. -7°F - 44°F 38°F Your winter temperatures are normal for this plant Excellent
This plant may not grow well at your location - your precipitation is too high.

Summary

Silphium perfoliatum, commonly known as cup plant or cup-plant, is a robust herbaceous perennial native to moist prairies, floodplains, and low-lying areas in eastern and central North America. It can reach heights of 4 to 8 feet (1.2 to 2.4 meters) and spreads 2 to 4 feet (0.6 to 1.2 meters) wide. The plant is characterized by its square stems and pairs of large, coarse, triangular toothed leaves that join at the stem to form a cup-like structure, hence the common name. From mid-summer to early fall, it produces bright yellow, daisy-like composite flower heads that are highly attractive to pollinators.

Cup plant is valued for its resilience to extreme weather, including its ability to survive winter temperatures down to −30 °C (−22 °F). Its optimal growing temperature is 20 °C (68 °F). The flowers are not only ornamental but also beneficial for attracting pollinators, while the seeds and stem "cups" provide food and water for birds. This plant is ideal for naturalistic plantings, rain gardens, and wildlife gardens due to its ecological benefits. It thrives in full sun and is adaptable to various moisture levels, from low to high, and prefers soils with slow to medium drainage. However, gardeners should be cautious as Silphium perfoliatum can be invasive outside its native range and should be checked before planting.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 4-8 feet
  • Width: 1-3 feet
  • Growth Rate: Rapid
  • Flower Color: Yellow
  • Flowering Season: Summer
  • Leaf Retention: Deciduous

Growth Requirements

  • Sun: Full Sun
  • Water: Medium
  • Drainage: Slow, Medium

Common Uses

Bee Garden, Bird Garden, Butterfly Garden, Low Maintenance, Showy Flowers, Street Planting, Water Garden

Natural Habitat

Moist prairies, floodplains, and low-lying areas in eastern and central North America

Other Names

Common Names: Cup Rosinweed, Indian-Gum, Cup-Plant, Indian Cup-Plant, Cupleaf Rosinweed, Squarestem Rosinweed, Skålplante, Verwachsenblättrige Becherpflanze, Durchwachsene Silphie, Becherpflanze

Scientific Names: Silphium perfoliatum, Silphium hornemanni, Silphium conjunctum, Silphium erythrocaulon, Silphium perfoliatum f. petiolatum, Silphium scabrum, Silphium perfoliatum subsp. perfoliatum, Resinocaulon perfoliatum, Silphium perfoliatum f. hornemannii

GBIF Accepted Name: Silphium perfoliatum L.