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Prairie Dock

Silphium terebinthinaceum

Prairie Dock is notable for its massive basal leaves that can grow several feet in length, providing a dramatic texture contrast in the garden. In late summer, it sends up tall, sturdy stalks topped with clusters of bright yellow, daisy-like flowers. These stalks can reach heights of up to 10 feet! This plant is a beacon for pollinators, drawing bees, butterflies, and birds with its nectar-rich blooms. Ideal for naturalistic plantings and restoration projects, prairie dock is highly adaptable to poor soils and dry conditions, making it a resilient choice for sustainable landscapes.

Details

Height48” - 120”
Spread24"
Bloom SeasonJuly – September
Soil Types
clayClay
loamLoam
sandSand
Soil Moisture
mediumMedium
moistMoist
Sun Exposure
fullSunFull Sun

Range Map

Native
No current
record

Ecological Benefits

Maintenance Tips

  • Deadhead flowers to encourage more blooms or leave seed heads for winter interest and wildlife food.
  • Divide clumps in early spring to manage growth or propagate.
  • Stake tall flower stalks if necessary to prevent them from bending or breaking in strong winds.

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