Dorothy and Shauna talk with arbourist Ryan Statham about invasive insects and trees.Ryan is an arbourist with Davey Canada, a company that specializes in urban forestry. Trees of all kinds hold a special interest for Dorothy, a member of the Tree Canada board. They discuss the emerald ash borer and its proliferation throughout North America, wherever ash trees grow. Trees can be treated or inoculated with a derivative of neem oil.For more info, click here.Support the show