There are actually quite a few solutions that will help you solve your borer problem organically:
-Cover your squash with floating row covers–polyester blankets that allow light, water, and nutrients access to your plants but not pests.
-Making sure to remove borer eggs before they become a problem. This is the most effective method, but unfortunately requires the most effort.
-BTK and insecticidal soap are two chemical, organic, non-toxic solutions that will take care of most bore-ing problems in your squash garden.
-Nematode injections can also repel attacks from borers as nematodes love to prey on the tasty caterpillars responsible for eating through your squash vines.
Spearmint and peppermint are known to keep away ants and aphids, so you can try planting some among your squashes to see if they keep away the borers as well. Garlic also keeps away insects when ground into a pulp and mixed with water. It’s cheap to buy at the market, and hopefully you can see results (or lack thereof) quickly. Combining equal parts of baking soda and powdered sugar is used to get rid of roaches. Disperse around and on your squash plants to see if it will help. Since it’s powder, you will be able to easily wash it off your squash when it’s harvest time.
It always takes more effort and persistence to kill or deter pests organically, but I always believe it is worth the effort.
After harvest, destroy the vines immediately so the larvae do not reinfest.
Plant a “trap crop” of early Hubbard squash, which will take pressure away from your main squash crops.
Catch the borers early on. Find the hole where they have entered and cut a small slit longways, remove the pest, and cover the wound with moist soil
Catch the moths at twilight or early morning when they are resting on top of the leaves.
Cover stems with barrier- like nylon- to prevent egg laing.
Check out the link below for more detailed assistance.
Introducing beneficial insects – such as parasitic wasps (too small to sting a human) – is often the fastest and most effective method for dealing with hard-to-reach pests like borers or leaf miners. Caveats: make sure you are introducing a species that is not too ‘foreign’ to your area; make sure to study these creatures carefully so that you can keep them healthy and happy.
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