White: White plastic mulch film reflects light and provides for a significantly cooler bed than almost any other color. It is UV stabilized for one year usage in typical US climates. It does not block enough light to inhibit weed growth. It is best used in climates that are exceedingly hot.
White/Black: This co-extruded plastic mulch film provides the combined benefits of black mulch film and white mulch film all in one product. Made properly with enough white colorant, it provides ample coolness but the underlying black layer still absorbs enough light to inhibit weed growth. Although not typically as cool as pure white plastic mulch films, it is still a very effective mulch film for hot climates.
Metalized: The benefits to metalized plastic mulch films are many. Metalized films provide extra light to the plant and reflect a range of light which can partially deter disease carrying aphids and white flies. It has been shown to provide a narrower range of soil temperatures between the heat of the day and the cold of night. It also has been proven to have significant barrier properties which will allow a farmer to cut the rate of fumigation used or increase the efficacy of a standard application. The metal coating is typically applied to either a black or white base film depending on the time of year that the film will be used.