If you want to grow potatoes in straw, there are proper, old-fashioned ways to do it. You might be asking yourself, "How do I grow potatoes in straw?" This article can help get you started with planting potatoes in straw.
Straw is what remains after common field hay has been winnowed, or stripped of its grain or seed heads. Baled straw is an excellent material to use to construct compost piles as it serves double duty .
Straw-bale gardening lets you grow vegetables without soil
Two tomato plants per bale with marigold plants tucked in pockets in sides of bales. The flowers will warn you when the bales are too dry inside. Also we use jute twine so it can go directly into compost next year. Straw gets spread as mulch for winter.