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We tried. We really did. Being vigilant about searching for and destroying eggs, watching for any signs of damage — we did it all. But it still didn’t work. The damn squash vine borer got our zucchini and yellow squash.

This shows squash vine borer damage on our zucchini plant. The frass is a sign of an infestation.

This shows squash vine borer damage on our zucchini plant. The frass is a sign of an infestation.

I noticed the tell-tale signs of frass a couple weeks ago. It looks a lot like sawdust and it meant our summer squash plants would die soon. That’s when I sprung into action and tried the Bt to stop the grubby invaders.

I’ve mentioned this before but for those who don’t know, Bt is a natural bacteria that messes with the borer’s digestion when they eat it. So as soon as we noticed the frass, I was armed with my garden syringe and a jug of Bt (it has to be mixed with water), stabbing away at the stems and injecting the solution.

This was the first time I tried using the Bt solution, and you know what? It worked like a charm. The zucchini plant has rebounded (for the most part), and there are even a couple growing again!

Even if we don’t get any more, I’ll at least count this as a success.

Related: How to control SVB

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