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Proper Mulching
Deeper Isn't Better
Photo Credit: Landscape Contractor National, September 2006 When mulch is applied too deeply it can actually cause significant harm to trees and shrubs. Thick blankets of mulch become matted and prevent air and water penetration. Most of the fine, absorbing roots are located within inches of the soil surface. These roots, which are essential for taking up water and minerals, require oxygen to survive. 

Benefits of Proper Mulching

  1. Helps maintain soil moisture. 
    Evaporation is reduced and the need for watering can be minimized.
  2. Helps control weeds. 
    A two- to four-inch layer of mulch will reduce the germination and growth of weeds. 
  3. Protect the trunk from potential damage by weed whackers and lawn mowers.
  4. Serves as nature's insulating blanket.  
    Keeps soils cooler in the summer and warmer in the winter.
  5. Gives planting beds a uniform, well-cared-for look. 
Mimic the Forest
Photo Credit: Landscape Contractor National, September 2006 Trees and shrubs growing in a natural forest environment have their roots anchored in a rich, well-aerated soil full of essential nutrients. The soil is blanketed by leaves and organic materials that replenish nutrients and provide an optimal environment for root growth and mineral uptake.  Two to four-inches of organic mulch is all that is needed. 

Benefits of Organic Mulch

  • Improves soil aeration, structure (aggregation of soil particles), and drainage over time. 
  • Improves soil fertility.
  • Inhibits certain plant diseases.
  • Attracts beneficial fauna - earthworms, toads, tree toads.