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There are many good list on the web, like this one that can be found with a simple search. You really need to plant substantial amounts of plants to make a difference to the bees though. The best thing that most folks can do is let the dandelions alone. Dandelions and skunk cabbage are too of the earlier plants that the bees depend on for spring build up (also trees such as maple).

cool thank you. We don't have acres and acres, but we certainly leave the dandelions alone and cultivate over 200 different species of flowers, medicines, plants, trees, etc on our land so they'll have a variety. Just curious if you had any specific lists. Thanks

Borage and yellow sweet clover are my personal favorites.

Thank you :)