Garden / June 9, 2018 /
With the right amount of sun exposure it is even feasible to successfully grow small fruit trees or bushes this way. In my day I have seen both lemon trees and blueberry bushes thrive in above-ground planters. Container gardens are also extremely space efficient as every ounce of soil in your container will count as no growing space will be wasted underfoot as you care for and harvest your plants.
A raised bed is ideally 18 - 24 inches deep, but if you are building your raised beds on top of existing earth you wilI have some leeway here. I have successfully gardened in boxes built over earth with only one foot of soil depth. You can find both detailed instructions for building a raised beds and multiple choices for buying raised beds here.