Answer: It could be that your tree isn't quite mature enough to produce fruit, or there may be some environmental conditions causing the immature to fruit drop. Mangos basically require a frost-free climate. Flowers and small fruit can be killed if temperatures drop below 40? F, even for a short period. Young trees may be seriously damaged if the temperature drops below 30? F, but mature trees may withstand very short periods of temperatures as low as 25? F. The mango must have warm, dry weather to set fruit. The yellowish or reddish flowers are borne in inflorescences which appear at branch terminals, in dense panicles of up to 2000 minute flowers. Pollinators are flies, hoverflies, and rarely, bees. Few of the flowers in each inflorescence are perfect, so most do not produce pollen and are incapable of producing fruit. Pollen cannot be shed in high humidity or rain. Fertilization is also ineffective when night temperatures are below 55? F. Mangos are monoecious and self-fertile, so a single tree will produce fruit without cross pollination. This is probably more information than you want to know, but it might shed some light as to why your mango tree is not producing fruit. Best wishes with your tree!
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