PlantsFlowers

Prairie Dock

Prairie Dock (Silphium terebinthinaceum)
Dominicus Johannes Bergsma · CC BY-SA 4.0
Prairie Dock in flower
In flower · (c) aarongunnar, some rights reserved (CC BY) · CC BY

Silphium terebinthinaceum

Chicago-region native. Suited to zone 6a.

Huge basal leaves and a tall yellow stalk

EasyFlowers
Light
Full sun
Moisture
Medium
Mature size
6–10 ft
Spacing
3 ft
Bloom or harvest
Flowers Jul–Sep
How it spreads
Deep taproot
What to buy
Young plants. You will not move a mature one.
When to plant
Plant May.

In the design

The leaves alone are waist-high. The flower stalk is a story. Don't plant it where you need a view.

Plants that share this spot

More in this group

Reference details
Conservatism value
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Wetland indicator
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