Sponge gourd is a cylindrical fruit that grows on a climbing, herbaceous vine. It has a smooth, green skin when young, and may feature ridges or ridge lines that run across the skin of the fruit. The Sponge gourd grows up to 60 centimeters long, but is harvested as a vegetable when it is young and tender, at around 12 centimeters in length. The Sponge gourd contains many seeds, which can be around 1.5 centimeters in length. The seeds are also edible but are usually removed before the flesh is eaten. The interior flesh of the Sponge gourd is smooth and creamy-white. Sponge gourd as a mild, zucchini-like sweet taste and a silky texture. Mature fruits are not tasty, being fibrous, bitter and brown.
Sponge gourd is grown year-round and has a peak season in the summer months.