Answer: Liriodendron can be attacked by at least six species of fungi, plus one disease that causes root and stem rot. Without additional information, it's difficult to diagnose the problem with your tree. The best course of action is for you to contact your local Cooperative Extension office and ask for advice. They'll probably want to know any symptoms your tree exhibited last year, and what specifically the leaves and limbs look like now. Contact Douglas Tregonig at the University of Maryland Cooperative Extension, 18410 Muncaster Rd., Derwood 20855. Phone (301) 590-9638.
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