Overwatering also results in a continual saturation of the plant root zone and will kill or damage many plants. Periodically, heavier soils will require leaching with additional watering to flush the salts. Soil Amendments Desert soils are poor and require the addition of organic matter to improve them. The use of organic and inorganic mulches in the landscape will conserve soil moisture by reducing evaporation. Also, as these mulches decompose, they mix with the existing soil to improve it.
Mulches also prevent weed growth and control erosion in problem areas.
The use of mulches adds interest and color to the landscape. These materials also serve as an alternative for turf. Examples of organic mulches are bark, well-rotted sawdust, peat moss and compost. Inorganic mulches would include colored stone, rocks and gravel. Appropriate Plant Selection Selection of your permanent plants should follow careful thought and include the needs, use and desires of the family.