This garden has a hugelkultur core –  a mound of buried wood inside that slowly decomposes creating a moist, fungally rich core that holds water, feeding and watering the plants.  See this article. See video. Make a fence with multiple pyramids, taking little yard space yet providing a great deal of growing space.

Built and planted.

A few weeks later.

And growing well ....

Now covered with morning glories, creating a cool cover for the veggies underneath in heat of summer.

Growing is done; winter comes.