Troubles with Trees: Tackling Pests and Diseases

In this episode of Plant Doctor with Mike Meier, Mike dives into listener questions and offers practical advice on various gardening challenges. The episode kicks off with a call from Chris, who is dealing with a pest problem on his redbud tree. Mike helps identify the culprit, likely Japanese beetles, and recommends using insecticides like Malathion or Sevin to protect the tree. He also explains the difference between insecticidal soap and contact poisons, emphasizing the importance of understanding how each product works.

Next, Dan calls in with concerns about walnut trees affecting his garden. Mike explains the allelopathic properties of black walnut trees and suggests moving the garden to avoid the herbicidal effects of the tree's litter. They discuss the symptoms of affected plants and the importance of keeping the garden at a safe distance from the walnut tree.

Mike also addresses seasonal lawn diseases, highlighting the importance of a healthy lawn to resist diseases like dollar spot and necrotic ring spot. He offers tips on creating a disease-resistant lawn by mixing different types of grass seeds, such as bluegrass, fine fescues, and perennial ryegrass.

Later, Greg calls in about a fungus issue in his wife's flower garden. Mike identifies it as slime mold and reassures Greg that it won't harm the plants. He shares his fascination with molds and funguses, explaining how to manage slime mold in mulch beds and lawns.

Throughout the episode, Mike provides detailed advice on identifying and treating various plant problems, from pests and diseases to environmental challenges. Whether you're dealing with pest infestations, lawn diseases, or garden issues, this episode is packed with valuable insights and practical solutions to help you maintain a thriving garden.

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