Maryland Cooperative Extension Service: https://extension.umd.edu/

• Master Gardeners: https://extension.umd.edu/mg Go to the "Local Programs" tab to find your county.
• Ask an Expert: https://extension.umd.edu/ask Have a question? They have experts with answers. They have experts in family and health, community development, food and agriculture, coastal issues, forestry, programs for young people, and gardening.
• Bay-wise Gardening: https://extension.umd.edu/baywise

Chesapeake Native Plant Center: http://www.nativeplantcenter.net/ In 2003, the U.S. Fish and Wildlife Service released the publication, Native Plants for Wildlife Habitat and Conservation Landscaping: Chesapeake Bay Watershed. Citizens, schools, non profit organizations, communities and government agencies used this resource to find the native plants that met their local conditions and interests in order to create landscapes to attract wildlife and reduce the amount of pollutants going into the Chesapeake Bay. This expanded online guide includes a geo-locator feature to identify plants suited to your location, a searchable database of the native plants that meet your conditions.

The following two guides are intended to aid home owners officials in selecting native plants for Critical Area buffer planting and management, habitat restoration and natural landscaping to enhance the health and beauty of the Chesapeake Bay. All of these plants are native to Maryland and naturally occur in the Coastal Plain region, which encompasses Anne Arundel and Calvert Counties. 

• Native Plants for Anne Arundel County, MD (PDF, ~3 MB)
  
• Calvert County Native Plants: Recommended Trees and Shrubs (PDF)

Celebrating Wildflowers with the USDA Forest Service. Find some wildflower activities, see where to view wildflowers in the National Forests, and even see some wildflower photos.