Silphium terebinthinaceum

Common name: Prairie Dock

Native plant

Prairie Dock has a tall central stalk that ends in sprawling flowering branches.  It has large yellow, sunflower-like blooms that occur late summer to early fall and last about a month.  It has dramatic, attractive clumps of basal leaves that are dark green, heart-shaped and nearly 2 feet long and 1 foot wide.  It is slow to establish but very long lived.  Its flowers attract a number of pollinators, and its seeds are a food source for many small birds.


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Price Level: 
Perennial- Standard
Sizing Options: 
Flat of 32 (plugs)
Flat of 18 (pints)
1 Gallon


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Plant Details

Plant type


Soil type

Dry Mesic, Mesic (Not too Wet Not too Dry), Moist Mesic

Light exposure

Full Sun

Bloom period


Urban environment

Uncompacted Urban Soils, Harsh Exposure Tolerant, Road-side/Salt Tolerant


Prairie Grasslands

Growth form


Growth rate


Flower color


Fall color



Mature height
3 Feet
Mature width
3 Feet
Max height
10 Feet
Max width
6 Feet

Additional information

Butterfly host plant Loved by birds Pollinator hot spot

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