Does this work on fungus in oak trees? Also, is it systemic?
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Thank you for asking! Unfortunately, 3-in-1 Insect Disease & Mite Control is not a systemic application for diseases in a tree. It is a spray application to control an active disease. You may need to make 3 applications spaced 7-14 days apart. At this time, we would not have a systemic disease control for trees. Jordan
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