Problem Info

In late spring, many leaves fall suddenly from maple trees. The end of the leaf stem is dark and shrunken, and broken off at the shrunken spot. About a week later, portions of the remaining leaf stems fall to the ground. If the stem portions are split before they drop, a soft white insect will be found inside.

Solution Advice

The borers do little damage, so it is best to ignore the problem. Most years, the damage is not noticeable.

Product Recommendations

• Ortho® MAX® Tree & Shrub Insect Control Ready-to-Spray