Formal programs called horticultural therapy recognize and use the physical, mental, and spiritual benefits of gardening to help their patients. Fortunately for people struggling with possible limitations, gardening is an activity that can be adapted for all sorts of special needs, from raised beds for people in wheelchairs or using walkers, to gardens for the blind that appeal to the other senses. First of all, keep the garden in scale with the enabled gardener's preferences, motivation, and skill level. Something on the smaller side usually works best at first so as to not be overwhelming or discouraging. For people in wheelchairs or using walkers, provide smooth, wide pathways and beds built high enough to reach into easily.
Design beds so that the center can be reached comfortably without stretching.
Twelve inches is a good depth for planting boxes, but remember that wet soil is heavy. Construction must be sound. Shallower boxes are sufficient for many plants such as annual flowers and herbs. Provide a place for tool storage that is close to the garden, either a small shed, a cabinet, or even a large mailbox mounted on a fence or fencepost, or on the edge of an elevated garden bed. Adapt tool pouches into hanging pouches that can be hung from wheelchairs, walkers, and the edges of raised beds.