They’re gorgeous, but they actually do more harm than good.
A leading wildlife ecologist wants you to think about your property—no matter how big or small—as an important link in your local ecosystem. Each plant you include in your garden affect the local food web, even the beautiful, seemingly harmless butterfly bush.
, professor and chair of entomology and wildlife ecology at the University of Delaware, revealed three hard truths about butterfly bush—and why you should stop planting them at home.Butterfly bush is an invasive plant, meaning it crowds out beneficial plants that have naturally grown in your community for centuries. This species originally from Asia readily takes over space where native North American plants would normally thrive.
These insects also require proper host plants so they can reproduce. Their larval offspring have to feed on the leaves of native species like butterfly weed,“People rationalize their perceived need for butterfly bush because they think it helps butterflies,” Tallamy says. “What they really want is a pretty plant in their yard.”Here’s the harsh truth: Planting non-native plants like butterfly bush in your yard actually makes it harder for the butterflies and birds in your neighborhood to survive.
For instance, if you want chickadees to breed in your yard, you need plants that can support the 6,000 to 9,000 caterpillars the birds need during the 16 days they feed their young. “If you don’t have that, the plant-caterpillar-chickadee food web stops,” Tallamy explains. “If you plant butterfly bush, and not native [species], then right away you’re removing at least 75% of the food that is supporting the biodiversity that’s out there.” And these critters need all the help they can get.
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