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For many people visiting and moving here, it’s all about the water. Unfortunately, the same is true for other, less-welcome entities: Eurasian watermilfoil, Quagga mussels, purple loosestrife and other invasive species. Combating these and other unwelcome plants and animals is an ongoing challenge. For example, Lake Leelanau has been in the news for its battle against Eurasian watermilfoil, a plant native to Europe, Asia, and North Africa. Now Glen Lake has discovered signs of the plant. If unchecked, it spreads quickly and forms thick mats in shallow areas. It blocks sunlight and kills native aquatic plants that fish and other underwater species rely on for food and shelter. Glen Lake Association watershed biologist Rob Karner says treating invasives follows a simple formula: find it, deal with it, and repeat until it’s gone. But while the formula may be simple, it’s far from easy.

They may be beautiful. They may look nice as lawn ornamentation. They may even be as familiar as the bouquet from the florist. But make no mistake: non-native plants and animals threaten native flora and fauna as well as the enjoyment residents and visitors derive from the area. Knotweed, barberry, baby’s breath and Eurasian milfoil are just a few of the invasive species found in our fields and forests, lakes and waterways. Some target specific hosts, such as hemlock wooly adelgid, and before that, the emerald ash borer. Others simply crowd out native plants, such as garlic mustard or autumn olive. The Northwest Michigan Invasive Species Network works with a number of partners, including the Leelanau Conservancy, the Michigan Department of Natural Resources, the Leelanau Conservation District, the Grand Traverse Band of Ottawa and Chippewa Indians, Sleeping Bear Dunes National Lakeshore and numerous private landowners to combat these and other invasives.