Abstract: Mulching system using opaque artificial mulching material (1) in perforated embodiments. Perforated embodiments have predetermined pattern of precisely spaced uniform holes (10) preperforated during manufacture. Preperforations allow pre-seeding before mulch is applied to effect weed prevention for densely planted wide row crops. Will also automatically provide proper spacing and eliminate need for thinning crop. Preperforation provides protection from root maggots. Some embodiments have abrasive substance (7) on top side, or abrasive substance (8) on bottom side, or on both sides to repel and destroy both slugs and snails. This is accomplished by abrasive substance (7 or 8) lacerating skin of slugs or destroying digestive tract through ingestion of abrasive substance (7 or 8), other embodiments can have weatherproof sticky substance-clear or insect attractant colored (11) applied to mulching material (1) and covered by removable protective film (9).