Abstract: An apparatus is set forth including a first shield with a first "J" shaped end mounted within a second "J" shaped end of a second shield to permit relative pivotment of the first shield relative to the second shield. The "J" shaped end of the second shield is of a complementary configuration receivable slidably within the first "J" shaped end. Modifictions of the instant invention include the second shield provided with a further leg oriented orthogonally relative to the shield to be directed interiorly of an underlying ground surface preventing undesirable instrusion of vegetation underlying the shield area. Further, serrated metallic reinforcing edges may be mounted to free ends of the shield to enhance their being directed interiorly of a ground surface.