Squash Vine Borer: Good or Bad for the Garden?

The squash vine borer, naughty, nice or neutral? Squash vine borer eggs are laid on shaded parts of the squash stems and leaves. Larvae hatch in about a week and immediately begin boring into runner stems.

The squash vine borer in the larvae stage, at work inside a stem.
The squash vine borer in the larvae stage, at work inside a stem.
TOM QUIRK