There are many nurseries that sell both native and exotic plants. Be sure to know if the plants you are buying are native. It is best to get species versus cultivars. Not all nurseries know the origins of their plants. Some nurseries will even recommend invasive plants such as Japanese barberry and Burning bush.

The following nurseries sell just native plants or native and exotic plants.

Herring Run Nursery of Blue Water Baltimore  https://www.bluewaterbaltimore.org/herring-run-nursery/

Wakefield Valley Nursery   https://www.wakefieldvalleynursery.com/

Mt. Cuba Center’s list of native nurseries by state https://mtcubacenter.org/action/nursery/