#9: Evil Butterfly Bush
"How could something so lovely be so bad," you ask? Well, we'll admit to being deliberately provocative by singling out this popular backyard beauty. But the truth is, it's an invasive plant. While the butterfly bush is a mainstay in many gardens, it's actually quite cruel. It attracts butterflies, but then does not provide food for butterfly larvae. On top of that, many botanical experts and government agencies have listed butterfly bush, which originated in Asia, on invasive species lists because it can spread and overtake native plants that feed beneficial insects and birds. And while it certainly isn't as aggressive as more common invasive plants, such as kudzu, a tree-strangling vine that has infested millions of acres in the U.S., butterfly bush is still available for sale in many nurseries (as is purple loosestrife, another notorious invasive).
How to kill the beast: If you already have a butterfly bush and don't want to rip it out, make sure you cut it back before it goes to seed, and rip out any offspring. Instead, choose native plants that better benefit butterflies, such as Joe Pye weed, butterfly weed, and swamp milkweed. And use other methods to make your yard a haven for butterflies.