A large, bumpy, mildly ribbed lemon. Believed to be a hybrid between a lemon and a citron, the juicy fruit matures throughout the year. New growth and flowers have a purple hue. Its ever-bearing nature (it flowers many times throughout the year) means that you will be seeing lots of purple. Though generally thought of more as an ornamental, the Ponderosa lemon can be used the same way you would use any lemon. Mature trees are small, round topped and very thorny.