Benefits of Mulching
1. It maintains soil moisture. Mulch retains water and reduces the evaporation process.
2. It inhibits germination of weeds and therefore impedes growth.
3. Mulch serves as buffers for soil to keep it cooler in hot weather and warmer in cold weather.
4. Mulching improves soil aeration, structure as well as drainage over time.
5. Mulch improves soil fertility/quality.
6. Inhibit certain plant diseases.
7. Limit salt build up.
8. Provides protection from damage caused by lawnmower and/or weed wacker.
9. Mulching gives a properly cared for appearance and uniform look to planting beds.
Mulches can be categorized as organic and inorganic. Organic mulches decompose and thereby making the soil more fertile. Organic mulches can be leaves, wood chips, barks of hardwood and softwood, pine needles, compost mixes and other by-products that often times come from plants. Inorganic mulches do not break down or decompose. Materials like the different variety of stones, geo-textile fabrics, lava rock and the likes are some examples.
The general depth recommendation when mulching is 2-4 inches. While organic mulches break down and must be topped or replenished, you must remember that the decomposition process differs with each type. Do not over-pile or make a heap at the base of the plants as too much can be unhealthy for plants, causes too much water retention resulting in soil drench and promotes certain plant diseases like root rot.
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