From now until January 24, Prairie Nursery is offering free shipping on all orders. Shipping charges can easily total 20-30 percent of your order, so this is a great deal.
This excellent, long-established nursery is located in Wisconsin and sells Midwestern natives, pure species only. Because not all Midwestern natives are native to other regions of the country, gardeners who live in other regions should check the native status of each species they plan to order. Two good places to do this are the USDA Plant Database or the Lady Bird Johnson Wildflower Center.