This whole project was an exercise in resourcefulness. The only new materials were the wood for the structure and the chair cushions/palette sofa padding. I layered three 3-inch-thick foam mattress toppers covered in a waterproof mattress cover and Restoration Hardware linen curtain ($8 at Goodwill).
My garden is a mixture of edible herbs/veggies and native prairie wildflowers. I broke up slabs of scrap marble and used them as pavers, surrounded by pea gravel.