You can try BT (Bacillus thuringiensis), it's a bacteria, not a chemical, so for all intents and purposes is organic. I'd suggest you wash veggies before eating though...
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I tried it before and it does work for the worms, regardless of color. But you have to spray often, and even the ground itself, after it rains.
I would second the suggestion for mixing the garden up, getting rid of the row planting and other large blocks of the same vegetable. Also, improving your soil with organic matter will strengthen the plants themselvs so they could fight the infestation.
I tried it before and it does work for the worms, regardless of color. But you have to spray often, and even the ground itself, after it rains.
I would second the suggestion for mixing the garden up, getting rid of the row planting and other large blocks of the same vegetable. Also, improving your soil with organic matter will strengthen the plants themselvs so they could fight the infestation.