Mt. Cuba Center in Hockessin, DE., is a botanical garden that inspires an appreciation for the beauty and value of native plants. The center offers a number of continuing education classes throughout the year.
If you are interested in learning more about wetlands, check out the courses offered by Environmental Concern, Inc.
The USDA Graduate School has a Natural History Field Studies Program, which includes courses in plant identification and forest ecosystems. Some of our MNPS members are or have been instructors in this program.
The University of Maryland Extension sponsors the Maryland Naturalist Program. Sessions are held in different areas of the State. Check the website, http://www.extension.umd.edu/masternaturalist, for program details.
The Center for Environmental Research and Conservation (CERC) of Columbia University has online classes for its Certificate in Conservation and Environmental Sustainability. For more information, see http://www.cerc.columbia.edu/.