Benefits

• Mulch helps prevent or deter weed growth. Using mulch can help maintain soil temperature, and can reduce the need for watering. Some types of mulch add nutrients to the soil as they decompose. In cold weather areas, mulch helps protect plant roots from excessive cold.
  
  

Types

• Common materials used as mulch include wood chips and grass clippings. Shredded leaves, straw, compost and newspaper can all be used as mulch. Organic materials help encourage beneficial soil organisms, such as worms, according to the USDA.
  
  

Considerations

• Some types of mulch are more attractive than others. Shredded bark or wood chips are often chosen because they look neat and attractive. Pine needles and shells can also be used as mulch and for landscaping purposes.