I can't find anything on this list sold anywhere at the local plant stores, am I looking in the wrong places or is there a regional thing to consider.
Many on the list are herb, many others are annuals. None of these are at nurseries yet, I'm sure. Wait a month and there will be plenty there! Also, some of them are more common on the west coast than they are around here (east coast).
I'll outline them below:
Annual Flower-Centaurea Blue Boy Bachelors Button -- Bees and hover flies love
Annual Herb-Borage officinalis -- Bees love it, cousin to comfrey, not affected by rain because of drooping blue flowers
Perennial Herb-Agastache (Anise Hyssop) -- loved by bees
Perennial Herb -Comfrey -- Bees love it
Annual (??)Flower-Centaurea Dwarf polkdot mix Bachelors Button -- Bees and hoverflies love it
Annual Flower -Consolida (larkspur) Consolida ambigua -- attracts beneficials
Perennial Herb -Eryngium planum Sea holly -- Bees are mad about this variety
Perennial Herb- Thyme T. Vulgaris -- a good honey plant for bees (thymus vulgaris)
Perennial Herb - Fireweed -- excellent honey, bees love it (west coast plant)
*Annual vine -Canary Creeper T. peregrinum -- bees love it, late late pollen plant (related to nasturtium)
Annual Flower - Cosmos –- valuable for late nectar source
Annual Flower - Phacelia tanacetifolia (Purple Tansy) -- attracts bee from miles
Annual Flower -Poppy giganthemum p. somniferum poppyseed poppy
Annual Flower -California poppy “Apricot chiffonâ€eschscholzia californica -- bees love it
Perennial Herb -Catnip Nepeta Cataria -- a good bee plant
Perennial Herb -Lemon Balm Melissa officinanlis -- Perennial, bees love it
Perennial Herb -Hyssop Hyssopus officinalis Perennial, -- bees, hoverflies
Perennial Herb -Lovage Levisticum officinale -- bees love it (so do I, it's great in potato salad!)
Perennial Herb -Spearmint Mentha spicata blooms late summer, --- bees, hummingbirds
*Annual Flower -Helipterum (Acroclinium) helipterum roseum Sensation Giants Mix
Yellow rocket
*Annual Flower -Impatiens capensis grows wild around my house, great for late nectar/pollen, lasts til frost-kill (Jewelweed, wild just about everywhere there's woodlands and water)
Perennial Flower -Great Blue Lobelia L. siphilitica perennial, dappled light, self-sows, flowers summer through autumn
Perennial Flower-Salvia Violet Queen S nemorosa -- particularly attractive to butterflies & bees Flowers 2nd year
*Annual Flower -Crimson clover Trifolium incarnatum outstanding cut flowers, -- annual, bees love it
*Annual Flower -Buckwheat Fagopyrum esculentum -- bees love it, turn under 10 days after flowering to avoid seed drop
*Perennial - White Dutch Clover Trifolium repens -- all beneficial insects
* = not likely to find in nursery, however, seeds are available
Hope this helps you in your quest!