Silphium terebinthinaceum (Prairie Dock)
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Silphium terebinthinaceum (NGN)

Prairie Dock

Tall stalks, to 10', carry bright yellow flowers above the broad, coarse foliage that grows about 2' tall in clusters close to the ground. Foliage is spade-shaped with a rough, "cat's tongue" texture typical of Silphiums. Attracts bees and parasitic wasps. Prefers dry to moist soil.
Height: 6-8 ft
Width: 24-36 in
Soil Conditions: Moist/Well Drained
Flower Color: Yellow
Bloom Time: July,August,September
Hardiness Zone: 3 TO 8
ITEM # CROP IMAGE SIZE CURRENT AVAIL
22679.1G #1 84
22679.38 38 Flat 0
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Characteristics & Attributes

Attracts Wildlife
Attracts Butterflies
Attracts Pollinators
Attracts Wildlife
Critter Resistance
Rabbit Resistant
Plant Habit
Upright
Light Conditions
Sun
Native Plant Community
Dry Prairie
Mesic Prairie
Savanna
Flower Color
Yellow
Flower Hue
Medium
Flower Height
6' to 8'
Flower Type
Head
Foliage Color
Green
Leaf Texture
Coarse
Prune Time
Jan/Feb/March
Flower Form
Single
Flower Size
2"
Growth Rate
Slow

Possible Substitution Plants

Silphium perfoliatum
Silphium laciniatum