The three major problems growing Mango trees here is the cold weather, diseases and high pH soils. For areas where Mango can grow unprotected outdoors, we have the issue of continual flowering caused by the cold weather. A new Mango grower is often attracted to the beautiful small potted mango trees in full bloom often holding some small fruit. What typically happens is the happy customer purchases this tree and tries to allow the small tree to mature the fruit. If the tree is large enough, the grower may actually be able to harvest a few fruit. The fruit quality is often mediocre at best and the tree becomes stunted from the efforts. The following year, the tree often grows very little and will often try to bloom again as cold weather approaches.
Because the tree was stressed holding fruit the first year, there is very little root and shoot growth the following year and the grower may actually experience what I like to call the "Magical Shrinking Tree" where instead of growing, the tree actually recedes with each passing year. In Warmer climates, a tree may simply veg out the following year in order to recover but in marginal climates, the cold weather is too strong a stimulus and the tree will flower again in the second, third, and following years. Flowering here in SoCal can take up to half a year or more.
Flowering can begin as early as October(sometimes earlier) and nightly low temperatures can still induce blooms as late as June and July as it did with some of my trees last year. I posted pictures somewhere but I forgot which thread. Foryounger trees, this often means we only get one long flowering cycle and only one vegetative flush, Ive experienced 0 growth flushes in a year for several trees, instead, it flowered again after a rest period.