Find a location with good drainage, determine the size and choose the edge material to design a raised garden bed. Sketch a design of the raised bed before breaking ground.
The location is an influential consideration when designing the raised bed. The garden needs plenty of sunlight and drainage to support growth of the plants. The location also affects the size of the bed. Leave enough space around the bed to reach the plants and walk around the yard.
The maximum recommended width for a raised bed is 4 feet. This allows the gardener to reach the middle of the bed without straining. Vegetable gardens in particular require access to the middle to harvest the vegetables. Flower beds also require access for weeding purposes. Standard lengths for raised beds are either 4 feet or 8 feet.
The edging material affects the cost, appearance and durability of the raised bed. Wood is a common option and is relatively easy to install. The wood is susceptible to rotting and damage over time. Stone or concrete block edging is a durable option.
Once you design the structure of the raised bed, plan what you want to plant in it. In general, taller plants go toward the middle with shorter plants along the outside.