who does the verticillium wilt soil test in mn
Thank you for the question. Verticillium in the soil can remain for 10 years or more and one of the keys to managing it is to plant verticillium resistant plant varieties. In order to find out if verticillium is the cause of your catalpa tree problem, laboratory diagnosis of plant tissue is the recommended course of action, not soil sampling. If you find out that this is indeed the disease you are dealing with, you will have to assume that it is possible for it to infect your other plants. Samples can be sent to the University of Minnesota Plant diagnostic clinic. Here is a link to their site on how to submit a sample: https://pdc.umn.edu/ Please read to learn more about verticillium wilt: https://www.extension.umn.edu/garden/yard-garden/trees-shrubs/verticillium-wilt/ Thank you for contacting Extension.