The Best How Big Should My Raised Garden Bed Be Ideas. Web the most popular height for raised beds is 11″. If you have poor subsoil, then a deeper raised bed is a better idea.

And, keep in mind, the higher the raised bed, the easier it will be to access your garden! Beds 8 feet long of 4 feet long may be a. Web the ideal raised garden bed width is between 18 inches and 4 feet.