Silphium perfoliatum
Common name: Cup Plant
Cup Plant is a tall prairie plant that produces panicles of large yellow flowers at the tips of its central stalk. Blooming period occurs early to mid summer and lasts a month to a month and a half. Its opposite leaves join together along the central stalk forming little cups that catch water. Birds are drawn the water source as well as the food source provided by its large seeds. Under ideal growing conditions, this plant will reseed readily and will form rather large colonies.
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Plant Details
Plant type
Forbs
Soil type
Mesic (Not too Wet Not too Dry), Moist Mesic
Light exposure
Full Sun
Bloom period
Summer
Urban environment
Road-side/Salt Tolerant
Habitat
Prairie Grasslands
Growth form
Shrubby/Clump, Colonizing / Spreading
Growth rate
Fast
Flower color
Yellow
Fall color
Yellow
Size
- Mature height
- 3 Feet
- Mature width
- 2 Feet
- Max height
- 8 Feet
- Max width
- 4 Feet
Additional information
Butterfly host plant Loved by birds Pollinator hot spot