Blue Stem Natives (Norwell, MA)
Native Plant Trust (Framingham, MA)
Russell's Garden Center (Wayland, MA)
The Monarch Gardener (Ipswich, MA)
Lady Fern Farm (Central MA)
Wild Seed Project (Maine): Northeast Native Seeds
City Natives - in Mattapan
Native Plants for the Small Yard: Easy, Beautiful Home Gardens that Support the Local Ecology (Ecological Landscaping Alliance)
Balcony gardens – Natives in pots for urbanites and people on the move (Wild Seed Project)
Attracting Pollinators to the Garden (Ohio State University Extension)
Caterpillars, Butterflies and Bees - Keystone Plants and Soft Landings (Pollinator Pathway)
Belmont native plant seed library at Belmont Public
Garden in the Woods - Native Plant Trust (Framingham, MA)
Nasami Farm - Native Plant Trust (Whately, MA)
Mass Audubon Sanctuaries (Throughout Massachusetts)
Ecological Landscaping Alliance (New England)
Friends of Bees: Working Group of Watertown Citizens for Peace, Justice, and the Environment (Watertown, MA)
Grow Native Massachusetts is based in Waltham and has a plant sale in the spring, usually June. Their website is also full of information
Pollinator Pathways - Public and private pesticide-free corridors of native plants that provide nutrition and habitat for pollinating insects and birds. Even the smallest green spaces, like flower boxes and curb strips, can be part of a pathway.