• Perhaps the most important advantage is greatly reduced soil compaction. Plant roots need air. In an ordinary garden, you can’t avoid stepping in the raised garden bed occasionally when doing your everyday gardening. A properly designed raised garden bed allows you to do all your gardening from the garden path.
• Plants can be spaced a little closer together in a raised garden bed because you don’t need places to step. This increases productivity per square foot of bed and reduces weeding when the plants begin to mature.
• Note: Avoid the temptation to crowd your plants. You will still want to use generous plant spacing
• Soil conditions and types can be controlled more efficiently in a raised garden bed and they can be varied easily from bed to bed. Raised garden beds are the answer when topsoil is thin.
• Water, fertilizer, compost, mulch, etc. can be applied more carefully because they only need to be applied to the raised garden beds.
• Various studies have shown that raised garden beds produce 1.4 to 2 times as much vegetables and flowers per square foot as ordinary beds, due mainly to the above advantages. You can have a smaller and more manageable garden that produces more goodies for your table.
• Raised garden beds tend to drain away excess moisture better than ordinary garden beds. This is another advantage that helps the plant roots to breath. In areas that have saturated soil like Florida and many areas of the South, raised beds may be the only way you can grow many types of plants.
• If you’ve framed your raised garden beds with railroad ties, timbers or landscape blocks, disassembly and reassembly is really a lot of hard work.
• If you’ve framed your raised garden beds with nice wood bed boxes: Raised garden beds bring your garden closer to you.
• Raised garden beds are after all, raised!
• Raised garden beds tend to bring more order and pleasing geometry to your garden, especially when forms or edging are used to define them.
• Raised garden beds can extend your gardening season. They tend to warm up a little sooner in the spring and remain productive later in the fall.
• Do your gardening from the comfort of the garden path. No more bending over to pull weeds or trim plants. Sit on a stool or put a seat board on your garden wagon!
Disadvantaged of your raised garden bed:
There are problems with most raised garden bed systems if you want to disassemble your raised beds to move or rearrange your garden or if you just want to roto-till your garden beds.
• You can try to pry the assembled bed boxes out of the soil. However, the small wood screws that most makers use to attach the form boards to the corner posts might pull out and the boxes could require major repairs.
• You can disassemble the raised garden bed boxes. However, on most bed boxes, the screws that hold them together are on the inside and are buried, fouled with soil and probably corroded.