Xtremehorticulture

Treat Now to Prevent Wormy Peaches

Peach twig borer seen now flying in the Las Vegas valley. These small brown moths are very similar to the insects that produce wormy apples. Treat now and prevent that from happening later.

This insect usually enters the fruit at the
stem end or along the suture of the fruit. It feeds just under the skin.
Usually you will see some “frass” or brown excrement at the entry point.

In
Nevada our experience has been that we don’t usually start catching this insect
in our monitoring traps until around May. If you have had wormy fruit in the
past, later in the season, it would be important to apply either Bt (Dipel®
or Thuricide®) or spinosad) now to the entire
tree or trees, paying particular attention to covering the fruit with the
spray. 

I add a surfactant (an additive that helps cover the fruit better) to
the spray when mixing it in the sprayer. These organic pesticides will set up a
protective barrier to this insect and keep it from getting inside the fruit. Follow label directions. Repeat
applications as the label directs.
A good website
on peach twig borer can be found here:

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