Oak Wilt Update From The Clinic

Oak wilt is a disease caused by the fungal organism Bretziella fagacearum. The disease can spread both underground and above ground. The disease is spread underground to healthy oaks through the root system of infected oak trees. Additionally, sap-sucking beetles can be attracted to the fungal mats that form under the bark of infected, dead oaks and can spread the disease above ground as they move to uninfected oaks.
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Joy Pierzynski, PhD