Garden / June 20, 2018 /
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.
Without regular water, vegetables will not fill out and some, like tomatoes, will crack open if suddenly plumped up with water after struggling without for awhile. You can not always rely on rain. If you have the means, a drip irrigation system is a definite plus for a vegetable garden. The new component systems are really quite easy to install and cost a lot less than most people think. And you will save money on water, because it goes directly to the plants roots. Less is lost to evaporation.