Use of Mulches
Mulching is often considered to be decorative. In fact it is one of the most beneficial practices in landscaping to conserve moisture. Mulches help reduce evaporation from soil and thus reduce the need for supplemental watering. By slowing down evaporation they also help maintain soil moisture at a even level. This helps roots grow more deeply.
Mulches also serve to insulate
plants from heat and cold. They also help control weeds that
compete with plants for water and other nutrients. Organic mulches
are usually best. The more fine-textured mulches hold moisture
better and allow air and water for flow more freely through them.
Different materials can be used for mulches. The wood and other organic mulches allow for oxygen to get to the root system more easily than rock or stone mulches. They will also return some nutrient components back to the soil over time as the break down. Course compost can also be used as a mulch, but be sure to ask for weed-free certified composts.
Rock or stone mulches can also be used selectively. Rock mulch will stay in place more effectively, especially in windy areas. Rock mulches do absorb more heat and may scorch the roots or leaves of heat sensitive plants. Like any other mulch, it must be selected to the area and its usage.
Mulches must be applied correctly in order to obtain the maximum benefit. Usually 2-3 inches of organic mulch is adequate to hold in moisture. Mulches should be spread outside of the plant canopy to encourage full root expansion. It is usually best to clear away a inch or two of much from the trunk or main stem to prevent wood rot.
Mulches must be maintained also. As the mulch breaks down, is compacted, or is otherwise removed it should be replaced with fresh mulch. This is just one aspect of the Maintenance principle.
Continue exploring the seven principles: