Malus niedzwetzkyana Tajikistan borders, it is known as 'kisil alma': 'red apple'. "Malus niedzwetzkyana" has been used to breed some modern red-leaved, red-flowered, and red-fruited apples and crabapples. It is believed to be the ancestor of Surprise, a pink-fleshed apple that was brought to the United States by German immigrants around 1840 and was later used by the horticulturist Albert Etter to breed some 30 pink- and red-fleshed varieties, the best-known of which is Pink Pearl. Another horticulturist, Niels Ebbesen Hansen, encountered "M. niedzwetzkyana" in the Ili valley, where he also met Niedzwetzky, in what was then the Russian region of Turkestan
Malus are borne in corymbs, and have five petals, which may be white, pink or red, and are perfect, with usually red stamens that produce copious pollen, and a half-inferior ovary; flowering occurs in the spring after 50–80 growing degree days (varying greatly according to subspecies and cultivar). Apples require cross-pollination between individuals by insects (typically bees, which freely visit the flowers for both nectar and pollen); all are self-sterile, and (with the exception of a few specially developed cultivars) self-pollination is impossible, making pollinating insects essential. Several "Malus" species, including domestic apples, hybridize freely. They are used as food plants