Rubber mulch has become a popular mulch option because it recycles and makes use of scrap rubber that would otherwise end up in landfills. It is used in commercial and home gardening and more widely for playground surfacing material. Rubber mulch is also desirable in that it is lightweight, breaks more slowly over time than other organic mulches and is simple to install and maintain.
Purchase enough rubber mulch in bags or by bulk to cover the square footage of your garden area with a layer at least 1 inch thick. Measure the width and depth of your area to be mulched. Consult the product label to determine the spread rate needed for the grade or size of rubber mulch and the depth you want to cover the area with.
Use a shovel or your gloved hands to load the mulch onto the soil surface making small, roughly equal piles of rubber mulch over the entire area to be covered. Alternatively, dump all of the rubber mulch into a single pile and spread it over the area until even and roughly level. Work carefully so as not to disturb the soil underneath.
Level the small piles out with your rake filling in any bare or thin spots as needed. Water over the mulch to rinse it and settle it into the soil surface.