Friday, May 14, 3-6 and and Saturday 2-5, D&R Greenway will have a native plant sale. Most of the plants are grown from seed collected from local natural populations of the species. For more information, including a plant list, go to www.drgreenway.org.
Among other sources of native plants, Bowman's Hill Wildflower Preserve (www.bhwp.org), just across the Delaware River, has a long-standing tradition, and Pinelands Nursery down in Columbus, NJ has both wholesale and retail components. Both of these have plants available throughout the season. Check the websites for details.