Our innovative wicking cell system closes the bottom of Vego Garden Raised Beds, & provides just the right amount of moisture for your plants to thrive. The 3.5” tall wicking cell serves as a reservoir, collecting excess water and redistributing it to your plants over time, so you don't have to water as often. It is also designed with air pruning strips so that your plants’ roots air prune and don’t get oversaturated. The wicking cells serve as your garden bed's bottom, so it can be placed on a patio or balcony instead of soil.