If you’ve read my past lamentations, you know that I had a pretty bad vine borer problem this year. Most years, I find one or two and can destroy them before they do any real damage. This year, I killed six and was fairly certain I hadn’t gotten them all.
They did a lot of damage to my winter squash. I was able to harvest a spaghetti squash, two acorn squashes, and two butternut squashes before the vines were killed, but most of the damage was to the pumpkins. We only harvested three small pumpkins this year, out of a whole bunch of potential pumpkins. None of the large varieties survived the vine carnage.
I am diligent about checking for eggs, and get out there and look for the borers as soon as I spot damage, but have been looking to no avail for something to prevent them in the first place. I finally came across a suggestion that I’ll be trying next year.
This source suggests placing sheets of aluminum foil on the soil around the plants. The reflections are supposed to confuse the moth which will then not lay its eggs on the leaves, and will move off in search of other plants to destroy. They also recommend putting a collar of foil around the base of the plant to provide some further protection.
Thought I’d pass on the suggestion for others who are searching. I’ll be trying it next year to see if it works.