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« on: March 13, 2012, 12:46:29 AM »
I have no doubt that mango could be breed for cold tolerance. I work in Tampa and there are hundreds of mango trees in this borderline climate. Most are in areas near the water, like South Tampa and Palmetto Beach. However, the two bad winters we had a couple years ago really proved the point to me. In Palmetto Beach there is a mango tree in nearly every yard. It got very cold and there were mango tree's 50+' tall that died out while some of the same height had no damage. Same effect for smaller trees.
Now most of the tree's are grown from seed. The avocado has been a great sucess story for finding good tasting varieties that can resist cold damage. Mango can be the same, but it needs to be realistic how cold they would be able to endure.
As far as named cultivars that can presently handle the cold, no clue. They are almost all bred for taste, dwarfing and disease resistance.