Gabion walls have been used by structural engineers and the military since ancient times, and they're gaining popularity today for use in residential retaining walls and as garden features. The term 'gabion' comes from the Italian word for 'big cage,' which is an appropriate description for the wall's outer structural component.
Originally, gabion retaining walls were made of willow woven into basket-like cages filled with rock. Today's versions are based on the same simple and effective concept, but the cages are built of durable, reinforced steel mesh that's designed to last for decades.
Soil health and erosion prevention are just a few of the benefits gabions provide in the garden. They also serve as built-in shade and create ventilation for plants in hot climates.