These are some plants that I favor. Plants favored by bumblebees are in bold print. My favorite is the Anise Hyssop pictured in the above header image.
Trees: Fruit trees, nut trees, Extend the season with a pussy willow tree. Chances are there are lots of maple trees near you, so plant something that blooms later. If you have room for a large shade tree, consider an American Chestnut, or a Linden/Basswood. A mature tree produces thousands and thousands of flowers. Crabapple trees are smaller and look spectacular when flowering.
Shrubs: Lilacs, Elderflower, Blueberries,
Almost any type of berry: Raspberry, Blackberry. Something for you as well! Win-win!
Lamiaceae/Mint family: Catmint or catnip, Spearmint, Any Hyssop, Basil, Bee Balm/Monarda, Salvia, Sage.
Astrocereae family: Daisies, Brown-eyed-susan/Rudbeckia, coneflowers/Echinacea, Sunflowers, Cosmos, Spider plants/Cleome, Bachelor Buttons, Aster/New England Aster. Coneflowers are another personal favorite
Herbs: Most of them: Thyme, Parsley, Dill, Flowering Allium, Chives. I note that Dill grows freely as a weed in my garden reseeding itself each year. In mid-summer the Dill flowers attracts parasitic wasps (can’t sting humans) that I believe are responsible for a lack of tomato hornworms in my garden.
Vegetables: Pole beans, Cucumbers, Squash, Tomatoes, Peppers,