One of the key secrets to container gardening success are these EarthBox Mulch Covers! In addition to keeping unwanted weeds and some pests out, these Mulch Covers help to conserve water and keeps nutrients in, all while protecting your plants’ growing environment against the elements. Made from durable, professional-grade agricultural film. Keeps rain out of the growing media to prevent crucial nutrients from being washed away. Depending on the climate and which color is face up, the mulch cover helps to attract or reflect sunlight. This assists in controlling the temperature of the growing media. Use the white side up in hot (temps regularly above 85° F), dry climates to prevent young seedlings from dying; or in contrast, help warm the soil to stimulate growth by using the black side up in cooler climates. Compatible with square planters with an 18 inch diameter.
