Buckthorn is an invasive plant that crowds out native plants and endangers pollinators by limiting their habitat. If you have buckthorn in your yard, fall or winter is the best time to remove it. There will be fewer bugs and buckthorn leaves stay green longer than native plants, making it easier to spot. Check with your local garden center or hardware store for recommendations on effective weed killers to use on buckthorn. For more information, call 952-563-8760.