People often ask where to buy seed mixes for planting wildflower meadows and pollinator habitat. Listed below are some wildflower seed companies that specialize in meadow mixes and pollinator mixes and carry mixes suitable for northern New England. Most also sell seed packets of individual species.
Prairie Nursery Wisconsin https://www.prairienursery.com
Prairie Moon Nursery Minnesota https://www.prairiemoon.com
Ernst Seed Pennsylvania https://www.ernstseed.com
Vermont Wildflower Seed https://www.vermontwildflowerfarm.com
There are not currently many sources of seed from New England ecotypes and availability is very limited. A few places to check if obtaining local ecotypes is your objective:
Grow Native Massachusetts https://www.grownativemass.org/resources/nurseries
Wild Seed Project (Maine) http://wildseedproject.net
New England Wetland Plants http://newp.com/catalog/seed-mixes
New England Wildflower Society http://www.newenglandwild.org/grow/store/buy-native-plants
Ask your supplier for the source or origin if that is important to you.
This list is intended to provide information and no endorsement of individual companies is intended, nor discrimination against companies not on the list.