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)
| • | Summer |
| • | Fall |
Soil Moisture Preference
| • | Very Adaptable |
| • | Well-drained |
