One thing you can do is plan your garden layout to include plants that are known for high nectar production. That should include cultivating and caring for certain plants that are ordinarily considered weeds/ferals. High nectar producing plants would be good for all pollinators, not only honey bees.
Wiki has this list of trees, shrubs and plants that are good sources of nectar and it states if each plant's nectar production is minor or major plus the length of time when the production is highest.
https://en.wikipedia.org/wiki/Northe...for_honey_bees
This website also has a good list of nectar rich flowers and gives some additional tips about which types and colours are best for specific pollinators - i.e. bees, butterflies, hummers - and includes information about other things you can do to attract and enable them in your garden.
A List of Nectar-Rich Flowers | Home Guides | SF Gate
.