How can I survive the apocalypse ensconced at the Avila Adobe?

One wonders, if a person were trapped inside the Avila Adobe and its three-foot thick walls high above the floodplain, and the key to the back building with the breakroom could not be found, which parts of the landscaping could that person eat to survive?


Loquats


Grapes


Sugar cane


Nopales


Oranges (conveniently planted in front of the restrooms as a natural Renuzit)


Lemons


Figs


Aloe vera (as a last resort)