Few sights are as charming as a hummingbird hovering over cardinal flowers in your backyard or a butterfly lighting on the black-eyed Susans potted on your balcony. Yet pollinators do more than beguile us: they are key to a healthy environment. With many pollinators threatened and their habitats disappearing, gardeners can make a real difference by planting native species that support these amazing creatures. The trick is knowing what species to plant and how to help them thrive. If you’re a gardener (or aspiring gardener) in the Northeast, Upper Midwest, or Great Lakes region, this...