Ponderosa lemon trees are slow growing but reach a height of 16 to 20 feet at maturity. The leaves are long, evergreen, glossy, and citron-like, being ovate elliptic in shape and Strong lemon scented. They have medium thick branches, that have many spines. New growth is purple tinged, as are the flowers. Ponderosa lemon also has larger than average citrus flowers, and bears fruit throughout the year. When grown as an ornamental, pruning is required to control the shape, and may be trained as a bush or tree. Clearly the largest Lemon anyone has with a size that is more of a Grapfruit Large Softball.