Luffa cylindrica, commonly known as the sponge gourd or luffa, is a tropical and subtropical plant belonging to the cucumber family. It is cultivated primarily for its fibrous fruit, which, when dried, can be used as a natural sponge. The plant features long, climbing vines with large, lobed leaves and produces yellow flowers that develop into elongated, cylindrical fruits. The fruit of Luffa cylindrica is harvested when immature for culinary use, often prepared in stir-fries or soups. When allowed to mature and dry, the fruit's inner fibers are revealed, making it popular for use in personal care products and household cleaning.