spray with Bt (Bacillus thurengiensis), available in most any garden
center. When the worms eat it with the leaves, the bacteria kills
them. It is safe for people, but it affects all worms/caterpillars,
so be careful not to spray it where you don't need it.
ISA Certified Arborist #TX-0236AT
You might try applying a sticky substance like Tanglefoot in a band around the
of your tree. You can put something between the tree and the sticky stuff to
the bark. This will trap the female worms as they climb up the tree to lay
for the next season.
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