Prairie Dock

Silphium terebinthinaceum

A member of the moist prairie community, Prairie Dock is a unique towering plant with flowering stalks that arise from a large cluster of broad basal leaves. The sunflower-like blooms last for a month or longer in mid-to-late summer. …

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In stock
SKU
38480-03 / 18480
Plants 3" Pots
1-4 $6.99 ea.
5-10 $5.99 ea.
11-31 $4.99 ea.
32+ $3.99 ea.
Seeds 1,100 seeds/oz
1/4 Oz $12.00
1/2 Oz $18.00
Oz $30.00
Lb $450.00
Cultural Details
Soil Type Clay, Loam, Sand
Soil Moisture Medium, Moist
Sun Exposure Full Sun
Height 4' - 10'
Bloom Color Yellow
Bloom Time July, Aug, Sep
Spacing 2'
Zones 4, 5, 6, 7
Root Type Taproot
Benefits Birds, Pollinators
Seeds per Oz 1100
Propagation Treatment Moist Stratification
Days to Moist Stratify 30 days
Direct Sowing Time Fall

A member of the moist prairie community, Prairie Dock is a unique towering plant with flowering stalks that arise from a large cluster of broad basal leaves. The sunflower-like blooms last for a month or longer in mid-to-late summer. Once they’ve become established the plants are drought tolerant and long-lived. Individual plants can flourish for decades. The large size and deep taproot make the plant difficult to move, so choose the site carefully in a garden setting. Birds love the seeds.