|'Banana', also known as 'Mexican Banana', and 'Plymouth Rock' Squash, is an heirloom variety squash introduced to the U.S. in the late 1800's. This 10 pound squash has blue-grey, yellow, and orange-pink varieties. The yellow is most common, and enhances the appropriateness of the name beyond its shape. This variety is quite popular on the West coast. The vines are 15 feet long, and the fruits ripen by mid-September.