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