Native plants better for wildlife is not just a slogan you hear from gardeners. It describes a real biological fact that affects your yard. Local animals evolved with native species over thousands of years. Your local birds and butterflies depend on plants they know. Non-native plants cannot fill this role for your wildlife.
I watched this play out in my own garden after I converted my lawn to natives. The first year brought dozens of butterfly species I had never noticed before. By the second summer, goldfinches arrived to eat seeds from my coneflowers. Carolina wrens started nesting in my dense native viburnum. The native plants wildlife habitat I created drew more life in two years than my lawn had in twenty.
The science behind this comes down to how insects specialize. About 90% of plant-eating insects can only feed on plants they evolved with. A monarch caterpillar will starve sitting on a non-native plant in your yard. Its body rejects the unfamiliar leaves. Most moths and beetles face the same problem. When you plant non-natives, you remove the food your insects need.
Dr. Doug Tallamy at the University of Delaware studied this gap in your landscape. A native oak tree supports more than 500 species of caterpillars. A non-native ginkgo tree supports only 5 species. That gives you a hundred-fold difference from one tree choice in your yard. Native plants support birds because your birds need those caterpillars to raise their young.
Think about what this means for birds in your neighborhood. A pair of Carolina chickadees must find 6,000 to 9,000 caterpillars to raise one nest of babies. They cannot gather enough food from yards full of non-native plants. Chickadee numbers crash in places where native plants drop below 70% of total landscaping. Your plant choices decide whether your local birds can raise young.
I added a second personal test in my small garden last spring. I planted three native serviceberry shrubs near my bird feeder. Within weeks, I counted fourteen different bird species eating the berries. The cedar waxwings showed up in a flock of thirty birds. They had never visited my yard before the serviceberries went in. You will see similar results in your own garden.
I also noticed something you might see in your yard. The birds that visit my native plants stay longer and bring their young. A pair of robins raised three broods in my garden last year. They taught each batch of babies to find food in my native beds. Your native plants will create the same family traditions over time.
Keystone native plants give you the most value for your gardening effort. Oaks, willows, cherries, and birches each support hundreds of caterpillar species in your yard. Native asters and goldenrods feed more pollinators than almost any other plants you can choose. Berry shrubs like serviceberry and elderberry provide fall and winter food for your birds.
Start with just a few keystone species and watch what happens in your yard. Even three or four native plants can draw new visitors within one season. Replace one non-native shrub at a time until natives fill your landscape. Your birds and butterflies will find your garden fast.
Focus on variety to help the most wildlife in your space. Mix trees, shrubs, and flowering plants together in your beds. Add grasses that produce seeds for your birds. Leave some leaf litter for ground-nesting bees. Each layer of your garden supports different creatures that will thank you with their presence.
Read the full article: 10 Essential Benefits of Native Plants
