An invasive plant has been detected at a park in Southwest Michigan.
Purple jewelweed (Impatiens glandulifera), also known as Himalayan balsam, was recently detected in Kalamazoo’s Frayz Park thanks to a citizen’s online report.
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According to the Michigan Department of Natural Resources, the plant isn’t common across Michigan, but it has been found and is being managed in some areas of the Upper Peninsula.
Although its orchid-like blooms and high nectar volume are attractive to both humans and wildlife, the DNR said it has highly invasive qualities. It can spread quickly due to high seed production, and it can grow in most conditions, often outcompeting native species.
Purple jewelweed thrives in forests and wetlands and along riverbanks, where it can increase erosion due to its shallow roots. Because of its plentiful nectar, it may reduce pollinators’ interest in native plants and crops.
How you can help
The Michigan DNR provided the following tips on how you can help:
- Don’t plant it. The Michigan Invasive Species Program discourages cultivating this plant because of its ability to spread beyond garden areas.
- Identify it. The plant typically grows 3 to 6 feet tall and has green, purple or red stems that are smooth and hollow. Flowers, which appear between June and September, are orchid-shaped and can be purple, pink or white. Leaves are long and narrow with serrated edges. Ripe fruit capsules explode when touched.
- Report it. You can report any unsuspected sightings of the invasive species using the Midwest Invasive Species Information Network’s online reporting tool or the MISIN smartphone app. Be sure to note the location and submit photos of the plant’s stem, leaves and flowers, if available.
For more information on Michigan’s Invasive Species Program, click here.