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Are top leaves of oak trees shriveling, Japanese maples coloring overnight and webs at the end of branches signs of dying trees? These signs do not necessarily mean the tree is dying, at least not immediately. They are due to a variety of causes, including stress, weather, insects/disease, mechanical damage or even mulch piled up against the tree trunk.

Recently, a reader asked about oak trees appearing shriveled. To give a better answer than above, I contacted Jonathan E. Perkins, certified arborist and Paducah Tree Board chair about what was causing the oak tree problem. His response was that it was likely due to the amount of wetness this year and a lot of tubakia leaf spot (late-season oak disease), mostly among red oaks. The fungus overwinters in affected twigs and foliage and is spread by wind and rain-splashing. Both conditions have been prevalent this year. The fungus appears as ¼-½ inch dark to reddish brown circles outlined in yellow. Rake and dispose of the leaves to reduce the source.