What type of mulching helps with soil moisture retention?

Organic mulches are particularly effective for soil moisture retention due to their ability to improve the soil structure as they decompose. These materials, such as wood chips, straw, or grass clippings, absorb water and help maintain moisture levels within the soil. As they break down over time, they also add organic matter to the soil, enhancing its water-holding capacity and promoting better root development for plants.

In contrast, while plastic sheeting can be used to prevent evaporation, it can create an impermeable barrier that restricts water from reaching the soil underneath. Inorganic mulches, like gravel or rocks, do not provide the additional benefits of moisture retention through decomposition and can sometimes raise soil temperatures, leading to further evaporation. Therefore, organic mulches are typically the best option for retaining soil moisture, supporting plant health, and improving soil quality over time.