This is a spectacular success story, by world renowned permaculture expert Geoff Lawton. His team went to the Jordan Desert and transformed 10 acres of the arid desert into a lush, thriving, food producing garden. They developed a system to harvest every drop of rainwater, and created swells with over a foot of mulch. Then they used a micro irrigation system in the mulch. These techniques maximized the moisture and brought life back to the soil.
They were able to grow date palms, pomegranates, figs, mulberries, citrus and more. This is fascinating and as Geoff Lawton says in this video: "All the world's problems can be solved in a garden".
It's not just that the moisture system worked and kept the soil and plants thriving-- in the process they lowered the salt levels dramatically. This location is only a few miles from the Dead Sea!
It is possible to re-green and decrease the salt levels in any desert with water harvesting, micro- irrigation and mulch. Not only did it work-- it has remained a living, thriving, food producing patch of desert ever since.