Your mango would be better off in a huge pot that you can drag indoors. It won't survive winter in San Antonio. The Citrus is questionable. I have seen some citrus thrive in the San Antonio area while others die. The loquat......I hope you planted it in an out-of-the-way place. It will grow to about 20ft. The fruit are great also. On a separate note, I brought several loquat from the city that I grew from seed to plant on my farm. I had a first harvest in the spring of 2011 after the mild winter.
I don't know about the chaya or chayote (even though I have seen them is stores)
Thanks.
So far under our no-rain environment, the only tree (really a shrub) is the Chaya spinach tree. Maybe giving it too much to drink?
The tree I expected to die first, the mango, planted in the shade of a massive shade tree on the south side of house, still thrives.
Had to buy supports to hold and train additional growth. Stalk not needing support was hard and looked like tree bark. Growth needing training was green and bent with the wind.
Bought 8 foot plastic stakes. Tied the tree to them.
Outcome . . . unknown.