MichiganDot
Answered on March 2, 2018
Elms often are bothered with elm leaf beetles. These go through several life stages but they don't look like brown worms, to me. Look at pictures online to see for yourself. My only other suggestion comes from your comment that the elm is close to the house. Too close? Some elms grow to 80ft and have roots capable of cracking foundations, leaving just enough room for worms to enter.
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