You may have invasive species on your land and not even know it. Learn about the harm they do, how to spot them, and how to fight them in a workshop in Dayton May 13. Troublemakers include common reed, common buckthorn, purple loosestrife, emerald ash borer, Asian longhorned beetle, and Japanese honeysuckle — plants and pests that aren’t native to Ohio but are here now and causing problems. Read more. Presenting the workshop is OSU Extension’s Ohio Woodland Stewards Program.