If you are looking for a low maintenance option to benefit native pollinators, consider planting native trees and shrubs. They provide overwintering habitat and food sources for our native bees, butterflies, moths, flies, wasps, and beetles. Many trees and shrubs bloom in the spring and provide an early nectar and pollen source. Fun fact from Heather Holm: One, 70 foot tall, mature black cherry tree (photos below) has the equivalent number of flowers as a 3,500 square foot perennial garden.
ACD's Annual Tree sale has a wide variety of trees and shrubs to choose from! See the full catalog here: https://www.anokaswcd.org/tree-sale-order-forms/2012-10-26-17-32-43.html
See Heather Holm's Native Tree and Shrubs for Pollinators guide for more information: https://www.pollinatorsnativeplants.com/uploads/1/3/9/1/13913231/treesshrubsposter.pdf