Silphium terebinthinaceum Prairie Dock
Ohio Native Plant Natural Range
Cultivation Information Prairie Dock
Leaves - Basal Leaves are Huge (12 in wide to 16 long) Give them Space - I have found they are slow to return in the spring and are easily over shadowed by other native plants. Two to three feet circumference would be ideal. Soil - Average - Handles Drought well Taproot - With a taproot that up to 14 ft deep, it is no wonder they can handle a drought situation well. Keep this in mind when designing your garden. Family - Asteraceae
Seed Provenance Silphium terebinthinaceum
Wildlife Significance Silphium terebinthinaceum
Propagation Notes Prairie Dock
Seed was stored in a plastic bag, mixed with vermiculite, for two months. Vermiculite maintains moisture and help prevent molding.
Collecting Seed - Collecting seed from Prairie Dock can be challenging, as Goldfinches and other songbirds gobble the seed up as quickly as it matures. Placing small onion or garlic bags over a few flowers once you are certain they have been pollinated ensures adequate harvest. Also, collect only what you need, leaving an equal bounty for wildlife.