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You can't put walnut into your composting bin!
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You can compost walnuts, but it's best not to.
This is because walnuts contain juglone, a chemical that's bad for some plants and vegetables.
If you aren't so familiar with botany, then you'll be unable to pinpoint which of your plant's walnuts may be bad for.
As such, it's best to avoid composting them entirely.
