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Credit: Noah Kalina

A component of American Hydrotech’s extensive garden-roof system, GardNet is composed of strips of 0.5"-thick polyethylene sheet that are connected by offset, ultrasonic welded seams. When expanded, the strips form a series of 13" by 10.5" cells that can hold growing medium for a garden roof in place on surfaces that slope up to 45 degrees. GardNet is available in 3", 4", 6", 8" and 12" depths and in sections of up to 34 cells. • hydrotechusa.com