- Carolyn Summers: Designing Gardens with Flora of the American East
- Douglas Tallamy: Bringing Nature Home - How You Can Sustain Wildlife with Native Plants
- William Cullina: Wildflowers - A Guide to Growing and Propagating Native Flowers of North America
- William Cullina: Native Trees, Shrubs, & Vines - A guide to using, growing, and propagating North American woody plants
- Boughton Cobb, Cheryl Lowe, Elizabeth Farnsworth: Peterson Field Guide to Ferns: Northeastern and Central North America
- Robbin C. Moran A Natural History of Ferns
- Jason Van Driesche & Roy Van Driesche Nature Out of Place: Biological Invasions In The Global Age
- invasive.org: Invasive Plants of the Eastern United States: Identification and Control
- BugWoodWiki: Invasipedia
- Cornell University: Ecology and Management of Invasive Plants Program
- National Park Service: Invasive Plant Atlas of the United States
- National Park Service: Plant Invaders of Mid-Atlantic Natural Areas
- Plant Conservation Alliance: Alien Plant Working Group Fact Sheets
- University of Connecticut: Invasive Plant Atlas of New England
- Finger Lakes Native Plant Society: Invasive Species of Tompkins County, New York
- New York State Department of Environmental Conservaion: Interim Invasive Species Plant List
- University of Texas, Lady Bird Johnson Wildflower Center: Native Plant Database
- The United States National Arboretum: Native Plant Alternatives to Invasive Plants
- Connecticut Botanical Society: Wildflowers, Ferns & Rare Plants of Connecticut
- Wikipedia: User:Nonenmac/Northeast Native Plants
- Amanda's Garden Native Perennial Nursery: Plant Desciptions
- The Plantsmen Nursery: Results for Geography:Native
- Ohio State Extension: Native Ohio Plants
- USDA National Resources Conservation Service: PLANTS Database
- Integrated Taxonomic Information System: ITIS
- New York Flora Association: Georeferenced plant lists for New York State
- Down Garden Services: Pictures of Common Weed Leaves
- Bob Zuberbuhler: Wildflowers (and trees) of Western Pennsylvania
- Minnesota Department of Natural Resources: The Trouble With Backyard Buckthorn
- New York Times - In the Garden: To Feed the Birds, First Feed the Bugs
- The Toronto Star - Mark Cullen: Let’s all go ‘native’
- Wild Ones: Native Plants, Natural Landscapes
- Habitat Gardening in Central New York: Central New York chapter of Wild Ones