Growing of grasses

Claim 1

A method of producing a grass-bearing lamina comprising providing a laminated structure having a first sheet of flexible reticulate material prebonded or prelaminated to a seconD sheet or film of flexible, substantially water and root impermeable material, said first sheet comprising a first set of parallel strands and a second set of parallel strands extending transversely thereof and bonded thereto, the space between the second sheet and said second set of strands being sufficient to permit root growth therein, distributing over the surface of said flexible reticulate sheet a layer of rooting medium and an adequate quantity of grass seed and subjecting the lamina to correct conditions of light, heat and moisture to promote germination whereby the conducting roots from each seed grow through the layer of rooting medium and through the meshes of said reticulate material so that the root system so produced bonds the rooting medium and the reticulate material sheet into a coherent unit of flexible laminate structure having at one surface growing grass blades and at the other surface (after removal from the impermeable surface) a root structure, wherein the flexible reticulate sheet material is pre-bonded or prelaminated to the sheet or flim of flexible impermeable material at a plurality of spaced localized points, areas or lines of adhesion whereby the reticulate sheet material is maintained in close or intimate contact with the adjacent surface of the impermeable sheet material while allowing access to the grass roots to find their way between the two sheets between the localized adhesion points, areas or lines, said second sheet being separable from said first sheet following a predetermined growth period.

Claim 2

A method of producing a grass-bearing lamina comprising providing a laminated structure having a first sheet of flexible reticulate material prebonded or prelaminated to a seconD sheet or film of flexible, substantially water and root impermeable material, said first sheet comprising a first set of parallel strands and a second set of parallel strands extending transversely thereof and bonded thereto, the space between the second sheet and said second set of strands being sufficient to permit root growth therein, distributing over the surface of said flexible reticulate sheet a layer of rooting medium and an adequate quantity of grass seed and subjecting the lamina to correct conditions of light, heat and moisture to promote germination whereby the conducting roots from each seed grow through the layer of rooting medium and through the meshes of said reticulate material so that the root system so produced bonds the rooting medium and the reticulate material sheet into a coherent unit of flexible laminate structure having at one surface growing grass blades and at the other surface (after removal from the impermeable surface) a root structure, wherein the flexible reticulate sheet material is pre-bonded or prelaminated to the sheet or flim of flexible impermeable material at a plurality of spaced localized points, areas or lines of adhesion whereby the reticulate sheet material is maintained in close or intimate contact with the adjacent surface of the impermeable sheet material while allowing access to the grass roots to find their way between the two sheets between the localized adhesion points, areas or lines, said second sheet being separable from said first sheet following a predetermined growth period.