As Earth grows warmer, its ground is becoming drier and saltier, with profound consequences for the planet’s 8 billion inhabitants — nearly a third of whom already live in places where water is increasingly scarce and the ability to raise crops and livestock is increasingly difficult.

In the intricate tapestry of backyard ecosystems, an often underestimated yet crucial factor is water retention. From arid deserts to lush rainforests, understanding and enhancing water retention can profoundly influence ecosystem restoration efforts, and it need not be complex.

To lay a hedge, you cut each tree or shrub part way through its stem, then bend it over and lay it down horizontally to make a barrier from which strong new growth extends upwards. But of course it’s not as simple as that. Hedge-laying is hard, time-consuming, skilled work.