Plants grow from seeds, take water and sunlight to grow, etc, regardless of the type of plant or the eventual use thereof. Use weird pesticides on plants you'r

Plants grow from seeds, take water and sunlight to grow, etc, regardless of the type of plant or the eventual use thereof. Use weird pesticides on plants you're growing to feed to animals, and not only do said weird pesticides end up in the water supply that's used for other plants being grown to feed to humans, but also they end up in the animals to which you feed the plants, and therefore in the resultant meat. So when pesticides are banned, they tend to be banned for all uses, not just "plants grown for humans" uses.