Surface for sports and other uses

A grass playing surface comprising:

• (a) a foundation;
• (b) all artificial grass turf located on top of tile foundation, the artificial grass turf having generally vertically upright fibers mounted in a porous backing, file fibers having at least one free end and extending upward in the same general direction;
• (c) a layer of growth medium disposed ill the artificial grass turf to a depth sufficient to substantially fill the artificial grass turf to the top of tile fibers;
• and
• (d) natural grass plants, having grass blades, crowns and roots, disposed in tile growth medium, tile roots extending downwardly through he growth medium, tile artificial grass turf and into the foundation the crowns being located slightly below tile top of tile fibers and tile blades extending upwardly above the top of the fibers forming a playing surface of substantially natural grass.

A durable natural grass playing surface comprising:

• (a) a foundation;
• (b) artificial grass means for protecting drowns and roots of natural grass plants located on file foundation, the artificial grass means including artificial grass fibers mounted in a porous backing material, the fibers including a free end and extending vertically upward in the same general direction from the backing material, a growth medium disposed in the artificial grass fibers to a point proximate the top of the artificial grass fibers;
• and
• (c) the natural grass plants having roots, crowns, and blades, file roots extending downwardly through the artificial grass means and into the foundation, the crowns being located below the top of the artificial grass fibers and the blades extending upwardly above the top of the artificial grass fibers to form the playing surface of natural grass blades.

A reinforced grass playing surface comprising:

• (a) a foundation;
• (b) a porous backing material located on top of the foundation;
• (c) generally vertically upright artificial fibers mounted in the backing material and extending upward in the same general direction from the backing material file fibers including at least one free end;
• (d) a layer of growth medium disposed on top of the backing material around the artificial fibers to a depth proximate the top of the artificial fibers;
• and
• (e) natural grass plants disposed on top of the growth medium.