The leaves fall from the trees as autumn arrives, drying out after the heat of summer. The wind causes the leaves to fall, changing the color of the forest to include green, yellow, red and brown leaves. It often rains in autumn bringing high humidity. Mushrooms sprout and mushroom pickers gather large baskets, including many edible varieties like chanterelles, but some mushrooms are poisonous and inedible. It is also chestnut season. Autumn is a season that is neither cold nor hot.