Step outside in summer and you can feel it: the air is alive. Bees hum between blooms, butterflies glide through the heat, and hummingbirds hover like sparks of light. Pollinators are in their prime—and they’re busy. But they can’t do it alone.

To support pollinators, most people reach for flowers. It’s a great instinct—nectar and pollen provide essential fuel for butterflies, bees, beetles, and hummingbirds in their adult forms. Annuals and perennials certainly have their place, especially in containers and flowerbeds. But to create a lasting impact with less upkeep, there’s no better place to start than native trees and shrubs.

Why? Because native woody plants don’t just bloom—they anchor ecosystems. A single flowering shrub can produce as many blooms as an entire garden bed. A mature tree? Even more. And unlike short-lived annuals, native trees and shrubs, once established, thrive for years with little input. They’re resilient, drought-tolerant, and built for our climate.

But here’s where it gets even more interesting: pollinators need more than flowers.

.Many of our pollinators—especially butterflies and moths—spend most of their lives not fluttering through flowers, but as caterpillars, quietly munching on leaves. Caterpillars don’t eat nectar. They need specific plants to survive, and the adult butterflies we admire only appear if we provide food for their larval forms.

That’s where keystone plants come in.

Some native plants support just one or two species of caterpillar. Others—especially certain native trees and shrubs—can support dozens or even hundreds of butterfly and moth species. These powerhouse plants are called keystone species, and they form the backbone of any healthy pollinator landscape.