Answer: Boston Ivy (Parthenocissus tricuspidata) is for the most part a dependable and trouble-free plant. However, it is occasionally subject to a number of foliar problems including assorted leaf spots and fungal infections. Often, cool damp spring weather can contribute to such problems.
Unfortunately it is impossible to make a positive identification based on your description. For a definitive diagnosis, and recommended control, if any, you might wish to take a leaf sample to your County Extension office.
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