Silphium terebinthinaceum

Prairie Dock

USDA Hardiness Zone 4-8

Robust native perennial with big, bold 2' basal leaves.
8-9' tall stiff spike with sunflower-like flowers.

Height

2-3 Feet

Spread

3 Feet

Color

Yellow/Gold/Bronze

Bloom Time

July-September

Homeowner Growing and Maintenance Tips

Taprooted, slow to establish but tolerant of dry, alkaline soils. Best for rear of border.

When to Divide

spring

Good Companions

Butterfly Weed (Asclepias tuberosa), Purple Coneflower (Echinacea purpurea), Spiked Gayfeather (Liatris spicata), New England Aster (Aster novae-angliae), Shining Coneflower (Rudbeckia nitida), Little Blue Stem (Schizachryium scoparium), Switch Grass (Panicum virgatum)

Characteristics & Attributes

Attributes & Uses
Dried Flowers
Cut Flowers
Exposure
Full Sun
Foliage Color
Green
Season of Interest (Flowering)
Summer
Fall
Season of Interest (Foliage)
Summer
Fall
Soil Moisture Preference
Well-drained
Very Adaptable
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