Building a Raised–Bed Vegetable Garden. When untreated wood is used, add a plastic liner to protect the wood and prevent the soil from leaching out in heavy rains. Raised beds take very little space, and can be built right over a concrete patio. Drainage in a raised bed is superior to that in an in-ground garden bed.
Can the raised bed garden no-dig be built on concrete slab? Will the soil stay too moist, is there a problem with doing the box on top of cement? Thanks.
Firstly, the question of standing raised beds on concrete. Although not an ideal situation for a raised bed, hard surface growing is certainly a popular idea as a number of our customers have placed their raised beds on a patio or in a courtyard setting, enabling them to grow vegetables in an otherwise barren area.
Big ideas for little plots: Raised bed on concrete Although wooden raised beds should be placed on soil, it's acceptable to build them on slabs of concrete â€“ and