Backyard dirt has rocks

[Tortellini0000]

Hello all!

I’m wanting to start working on an outdoor enclosure for my soon to be tort. The area I’m planning has some small rocks mixed into the dirt so I want to get rid of the top layer and was wondering what would be the best/safest substrate to add to help with plants/grasses growing? Thanks!

 

[Ink]

Tortises can and will eat small rocks. Jagged rocks can poke and injure them too. I'm not sure on the substrate. How big will the enclosure be?