building a perfect raised bed Shari Brown Brown Brown Burkey Amber Sweaza Would be great for gardening!
This looks relatively simple and affordable. If it wider you could plant tomatoes in the middle - they could be protected agains the southern heat. a fishing net? a volleyball net?
I love the landscape bricks around the base. Small-Space Gardening: Build a Tiny Raised Bed
Good for greenhouse floor and heat mass.