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May 31, A close examination of leaves on the ground will likely show leaves with only a small portion of their stems (petiole). This leaf drop is caused by the feeding of maple petiole borers, Caulocampus acericaulis.
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Petiole borers are small insects called sawflies, which are non-stinging wasps. The sawfly is only about 1/6 of an inch long and emerges Estimated Reading Time: 2 mins. Sep 23, Black walnut trees tend to be the first to lose their leaves each year, and invasive bush honeysuckles are among the first to grow their leaves in the spring and last to drop them in the treemulch.club: Tommy Springer. Some trees tend to hang on to a portion of their leaves through the winter, making spring leaf drop perfectly normal.
We usually think of fall as the season for shedding, but there are a few tree species that go against the grain. But if you don’t have a tree that naturally loses its leaves in spring, your tree could have an infection.
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During that process, the trees lose a lot of water – so much water that when winter arrives, the trees are no longer able to get enough water to replace it. And so now we know. Leaves fall- or are pushed- off trees so that the tree can survive the winter and grow new leaves in the spring.