A composite characterized by an average density of 60 Kg/m3 to 180 Kg/m3, with at least two portions having a different density of at least 20 Kg/m3, made of a binder, and a foamed elastomer or a foamed rigid polymer, is disclosed herein. Uses of the composite and of matrices and articles incorporating same for the improvement of plant growing and/or weed control are further disclosed.
