and like poison ivy, cashew plants contain a toxin called urushiol. It's found in the plant itself and the brown oil inside a nut's shell. It can cause burns, itches, and blisters, which is why ...

sumac and poison ivy. Cashew trees grow in warmer climates, such as India and Vietnam, who are some of the world’s biggest producers of cashew nuts. You can buy cashew nuts all year round in the ...