Abstract: A grass product that is substantially protected against or free from insect infestation as by certain soil grubs or the like and method for manufacturing the same. The grass product may be manufactured as sod or grassland and cut into suitable units to be transported and used as a covering for lawns, terraces and the like previously prepared to accept them. Alternately, the grass product may be manufactured on top of existing sod such as in a lawn. The grass product comprises an upper layer of rooting material, a lower layer of sod or rooting material containing grass roots and/or seeds, and a nondegradable screen of a predetermined mesh size interposed between the upper and lower layers. The screen has a predetermined mesh size which prevents insects larger than the mesh from passing from the upper layer into the lower layer and vice versa.