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San Diego Wood Chips
Wood chips come from a variety of trees, including both hardwood and softwood varieties. In San Diego wood chips are one of the best performers in terms of moisture retention, temperature moderation, weed control, and sustainability. Termites do NOT nest in woodchips nor mulch! In perennial and shrub beds, wood chips or mulch can reduce the need for irrigation by as much as 50%. The chemical and physical diversity of these materials resists the tendency towards compaction seen in sawdust. Additionally, the materials vary in their size and decomposition rate, creating a more diverse environment that is subsequently colonized by a diverse soil biota. A biologically diverse soil biota is more resistant to environmental disturbance and will in turn support a diverse and healthy plant population. Wood chips are considered to be slow decomposers, as their tissues are rich in lignin, suberin, tannins, and other decomposition-resistant, natural compounds. Thus, wood chips supply nutrients slowly to the system; at the same time they absorb significant amounts of water that is slowly released to the soil. Finally, the reuse of plant materials as mulches keeps them out of the landfill; a benefit with both economic and environmental attributes.

How to Calculate the Amount of Mulch Needed
It is a common procedure to apply mulch over a landscape fabric to reduce weed growth. However, the chips will give a greater improvement on soil tilth where they can breakdown into the soil without the fabric layer in between. Weed growth in a mulch bed is a problem when the mulch is not at an adequate depth! As an alternative to the weed fabric, maintain a proper mulch depth to manage weeds. Weed seeds that germinate above the fabric layer will be easy to pull.

There are 27 cubic feet in a cubic yard. One cubic yard will cover 100-square-feet with a 3 layer of mulch. Figure out the square footage of your bed, that is the width times the length for square or rectangular shaped beds. The square footage of a circular bed is the distance from the middle of the circle to the outside, multiplied by itself and then multiplied by 3.14 (which is pi).

Bulk Soil, Mulch Compost Calculator

Square Feet To Be
Covered

Cubic Yards Needed*

*Quantities are approximate and do not take into account material settling or compaction





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