Boy, your going to need alot of water and sand to keep this cactus alive for that long.
Btw, I know that the desert is very dry, but at night it's nice and cool, when it rains, it rains alot and we cactuses take in alot of water and store it inside of ourselves so we'll have a good susppley till the next time it rains. If you ever get stranded in the desert, you can cut open a cactus to get water. Dont cut me. I'm the handsome cactus with the computer