This man is growing mango and avocado trees in his garage because it can't survive in the ground where he lives! You think that could be a BIG BRIGHT CLUE???
Mangos are adapted to tropical and subtropical areas, meaning consistent summer-like temperatures are a major factor in determining their success. This fruit tree is extremely sensitive to cold. At temperatures below 40ºF, a mango tree's ability to flower and produce fruit becomes seriously compromised. When temperatures drop below 30ºF, the tree's leaves and branches will almost certainly suffer damage. Exposure to temperatures below 20ºF, even for a short time, can kill the tree. At the moment, I'm afraid there are not any varieties of mango trees that are considered cold-resistant.
An avocado tree is a tropical plant that thrives only in zones 9, 10, and 11. Avocado plants grown from seed will take anywhere from five to 13 years to flower and bear fruit. Fruit on trees grown from seeds are seldom good to eat. Propagation is mostly by grafting.
I live in South Florida and been around Mango and Avocado trees all my life. I knew the guy was nuts when they showed him growing these trees and you can tell by the vegetation around his house - shown when the kids were playing on the trampolines outside - is not compatible with subtropical fruit trees.
