For anyone interested in native plant gardening, the Long Island Native Plant initiative is having a plant sale June 3rd, 4th, 10th, and 11th. As far as I know, they are the only nursery that sells Long-Island-local ecotypes (plants that were grown from seed initially collected on Long Island). Link to LINPI site with info

Unfortunately, the sale is all the way out near the "tail" of Long Island.

If you know of native plant sales tin the metro area, post them in the comments!