What is plastic mulch? advantages and disadvantages Plastic mulch benefits crops by increasing yields and improving quality through better soil management, including moisture retention, weed suppression, and temperature regulation. It also protects plants from soil-borne diseases and pests, leads to earlier and higher yields, and can reduce the need for herbicides and pesticides. Soil Available at Cam's 4ft by 4000ft $2450 3ft by 4000ft $1860 1.2 mil thickness the highest quality on the market 3