Since our soil is riddled with crazy huge boulders,
the option to sink some 4″x4″‘s was more than a Herculean feat. It was darn near impossible. I mean, you literally dig an inch and hit another boulder as soon as you have just unearthed a boulder. It is crazy! So, like our raised beds, we decided to stay above ground. Using 5 gallon buckets, Quickrete, and some pressure treated 4″x4″‘s, we created our vertical supports for our wall.