A generally organic yard is the best way to support pollinators. But I'm going further. I set up 3 edged beds in my back yard last year. One is for Spring bulbs and daylilies. But the othe other 2 are for the bees/hummers/butterflies/pollinators.
One is meadow flowers, the other is a hummer/bee/butterfly bed. The meadow flowers are barely starting to bloom. The other is just emerging (planted later).