Abstract: An improved anchor device for retaining an erosion mat over a plant growing medium layer in a green roof assembly. The anchor device includes a base member having an elongate rod extending from a planar portion. The base member can be placed in the green roof assembly with the rod projecting above the plant growing layer and the erosion mat. A retainer is secured to the elongate rod and holds down the erosion mat. The retainer includes plant growth openings whereby plants rooted in the plant growing layer may grow therethrough. A central opening in the retainer is defines by flexible engagement members. The rod is received through the central opening and the engagement members engage annular indentations which are formed along the rod between annular protrusions. The engagement members extend at an acute angle relative to the rod.

Abstract: An assembly for inhibiting wind erosion including an anchorage structure, an erosion mat and a retaining member. The anchorage structure includes a downwardly facing base surface, an upwardly facing anchorage surface, and a rigid elongate member. The anchorage structure is supportable on its base surface with the elongate member in an upright position. The anchorage structure is disposed within a plant growing medium with the elongate member extending upwardly through the erosion mat. A retaining member is secured to the elongate member and engages the upwardly facing surface of the erosion mat to inhibit the removal of the erosion mat. The assembly can be used in a green roof system by placing a drainage layer on the roof and a filter fabric between the plant growing medium and the drainage layer. The anchorage structure is positioned above the filter fabric.

Abstract: An assembly for inhibiting wind erosion including an anchorage structure, an erosion mat and a retaining member. The anchorage structure includes a downwardly facing base surface, an upwardly facing anchorage surface, and a rigid elongate member. The anchorage structure is supportable on its base surface with the elongate member in an upright position. The anchorage structure is disposed within a plant growing medium with the elongate member extending upwardly through the erosion mat. A retaining member is secured to the elongate member and engages the upwardly facing surface of the erosion mat to inhibit the removal of the erosion mat. The assembly can be used in a green roof system by placing a drainage layer on the roof and a filter fabric between the plant growing medium and the drainage layer. The anchorage structure is positioned above the filter fabric.