- Written by Robbi Hoy
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Helpful tip from The Garden Geeks: Do you know a simple trick to keep your trees safe from defoliating worms (I hate army tent worms!)? Wrap Duct Tape around the trunk of the tree about 3 or 4' off the ground. The strip around the trunk should be about 6" to 1 foot wide. The worms try to climb the tree but can't cross the tape. Army tent worms will spin their nasty webs around the trunk of the tree allowing you to come and kill them any way in which you see fit.