: Reported to have some of the highest pesticide residue loads, particularly from insecticides and herbicides used during large-scale production in California.
: Despite their hard shells, walnuts are often "saturated" with chemicals because they face many pest issues. Their high oil content (roughly 65%) also makes them particularly prone to absorbing fat-soluble pesticide sprays once they are cracked open. Lower Priority / "Safer" Conventional Options which nuts to buy organic
: Technically a legume, peanuts grow underground in moist soil, making them highly susceptible to mold (like aflatoxin) and fungi. They are often heavily treated with pesticides that can be absorbed directly into the soft, permeable shell. : Reported to have some of the highest
: Often wild-harvested in the Amazon, which significantly reduces the likelihood of synthetic pesticide use during growth. Lower Priority / "Safer" Conventional Options : Technically
: Often treated with a wide array of chemicals (insecticides and fungicides) in major producing regions like West Africa.