So I'm want to re do my enclosure and saw that I needed to plant more edible plants but Ido not know what type of substrate to use
My summer are 87-100 so if you know any dry well drained substate let me know or what you guys use
What is in there now, just dirt and some rocks? That's how I would leave it. If you need some more, use plain dirt,fertilizer and pesticide free. Looks like it will be a great area.
For good drainage, you can't beat aged finished compost. Make your own. You can top dress the habitat, you don't have to dig it in. It will also feed your plants & provide good seed germination.