Mulch is a layer of nonliving material, which covers the surface of the soil
surrounding a plant. Mulch can be organic material as pine bark, compost and
woodchips or inorganic material as lave rock, limestone or similar materials.
It is best to use mulch whenever possible. A good amount of mulch conserves
water by significantly reducing moisture evaporation from the soil. Mulch
also reduces weed population, prevents soil compaction and keeps soil
temperatures more moderate.
