The following are highlights and updates about samples and questions recently received in the Plant & Insect Diagnostic Clinic. Visit the PIDC’s Facebook page to ask questions and for updates and more pictures.
We have received a few samples of anthracnose on ash and one on oak. Anthracnose is a common spring leaf-spot disease and is not a serious problem for health trees.
We are starting to receive tomato samples. Remember to be cautious when using grass clippings, mulch or other organic matter in tomato plantings as tomatoes are sensitive to growth regulator herbicides. Growth regulator herbicides are commonly used for broadleaf weed control. Animals eating grass on treated pastures can pass enough of the herbicide through their digestive system for the manure to damage tomato and other sensitive plants. Damaged plants will have twisted abnormal growth.