I am planning to redo my whole back yard, well I haven't really done the backyard yet. But am wondering if railroad tile(those long wooden block used for the train tracks) are strong enough to hold back the tortoise when full grown or will I have to stake them to ground one on top of each other? I do have 3 citrus trees in the area, you think they will cause a problem? It be nice to see more ZONERS(Arizona people) posting there enclosures and what plants they are using. I'd like to set up some nice plants in the landscape that will be good in Arizona and yummy for my babies.