Organic mulching materials include grain straw, fresh or old hay, freshly cut fodder or cover crops, chipped weeds, wood shavings, tree leaves, cotton tiller waste, rice or buckwheat husks, and other crop residues. Hay and straw are among the most commonly used organic mulches in organic horticulture. Organic mulch is any type of mulch that was once alive. It includes things like wood chips, bark, and straw.
All organic mulches break down and improve soil. Organic mulches originate from living materials. They can consist of herbs, leaves, straw, crushed bark, pine needles, or compost. Polypropylene mulch is composed of polypropylene polymers, while polyethylene mulch is made of polyethylene polymers.
But this decomposition process also means that organic mulch doesn't last as long as inorganic mulch. Because of the large amount of mulch that is often required on a site, it is often impractical and expensive to obtain and import sufficient mulch materials. Plastic mulch used in large-scale commercial production is placed with a layer of plastic mulch stretched by a tractor or freestanding. If you live in a cold climate, organic mulch may not be the best choice for your heat-loving vegetables, as it will prevent the soil from heating up.
Wood chip mulch is often used under trees, shrubs, or large planting areas and can last much longer than arborist mulch. Bark mulches are expensive, tend to compact and form a barrier to water, and are not as good at conserving water as wood chip mulch. Wood chip mulch is best for covering trees and shrubs, flower beds, perennial flowers, orchards, and walkways in flower and vegetable gardens.