Silphium terebinthinaceum - Prairie Dock

Prairie Dock is perhaps the tallest of the prairie composite reaching up to ten feet. Its yellow flowers bloom mid summer and attract numerous pollinator and birds. Great seed source for fall migrating songbirds. It grows form a tap root that can get quite large. Found in prairies from western Iowa through Ohio, North into Canada and South to Georgia.  This native perennial needs room to grow! Can work well in the back of garden beds.  How To Plant Prairie Dock Seeds: Direct sow seeds into prepared soil in late fall once soil temps are below 50 degrees (usually mid to late November). Can also be planted in winter during natural freeze / thaw cycles and early spring. Plant shallow, no deeper than 1/8 to 1/4 inch deep and lightly rake to work seed in. Plant in full sun. Can take three growing seasons to fully establish.  What is Stratification? Seed Info Seed Envelopes contain approximately 0.02 ounces of seed and cover about 5 to 10 square feet.  Product Details Flower Color: Yellow Hei