The Keitt is the last to mature. With proper care a Keitt mango can reach one kilogram in weight and because it comes to market in September it is popularly known as the "September mango." Fangshan in Pingtung, on the southern end of Taiwan, is very windy with ample sunshine since it is located along the coast. The mango varieties here ripen before others, so they command a superior price.
台灣南端屏東枋山由於靠海風大、陽光充足，多種芒果皆搶頭彩採收上市，因為一枝獨秀，市場價格頗佔優勢。