The walnut meat is non-toxic, but the greenish-colored skin is toxic.

The outer green skin of green walnuts is poisonous because it is not ripe, and the kernels inside are not as oily, so they are easily spoiled and are not full when dried. In the tree on the ripe walnut high nutrition, high oil, green skin naturally fall off, peach kernel full, good taste, and easy to save.

The juice of green walnuts is toxic, so be sure to avoid direct contact with the juice of green walnuts. Green walnuts can not be eaten directly, you must first go through the peeling process, and in the process of peeling do not let the green skin of the juice splashed on other skin, otherwise it will ulcer, because the green walnut skin is also known as the "green dragon clothes", the juice is very poisonous. Do not splash in the eyes.