So my wife is employing two methods in this Garden: three sisters and a melon pit. In the center is the melon pit (already) filled and packed down with organic kitchen waste that should feed the ten x ten garden.
If you're interested in the three sisters method look here - https://www.gardeningknowhow.com/special/children/a-three-sisters-garden.htm
Around the perimeter in the cinder block she'll plant various flowers that will repel bugs, animals, and evil spirits.
In the second picture is my wife's medicinal garden (she's a white witch). She claims every plant here has medicinal properties - looks like weeds to me.