General References
American Horticultural Society
http://ahsgardening.org/gardening-resources
Grow Native Massachusetts
https://www.grownativemass.org/
Massachusetts Horticultural Society
https://masshort.org/
Massachusetts Master Gardeners
http://massmastergardeners.org/
UMass Extension
https://ag.umass.edu/
United States Department of Agriculture National Agricultural
https://www.nal.usda.gov/home-gardening
Chicago Botanic Garden
Chicago Botanic Garden
Plant Identification
Native Plant Trust
http://www.nativeplanttrust.org/
Missouri Botanical Garden
http://www.missouribotanicalgarden.org/plantfinder/plantfindersearch.aspx
USDA Natural Resources Conservation Service
https://plants.usda.gov
Fine Gardening Plant Guide
https://www.finegardening.com/plant-guide
Poisonous Plant Guide
Poison Control
https://www.poison.org › articles › plant
https://www.poison.org/articles/plant
https://poisoncontrol.org/prevention/poisonous-plants/ https://www.poisoncontrol.org/prevention/poisonous-plants/
The Spruce – 22 Poisonous Plants to Know
https://www.thespruce.com/pictures-of-poisonous-plants-2132624
Poisonous Plant Guide