What is a common benefit of using organic mulch in gardens?

Using organic mulch in gardens provides several benefits, and one of the most significant is its ability to help retain soil moisture. When applied to the surface of the soil, organic mulch creates a protective layer that reduces evaporation rates. This means that the soil beneath stays cooler and retains more moisture, which is particularly beneficial during hot weather or in dry climates. The presence of mulch reduces the need for frequent watering, thus saving water and promoting healthier plant growth.

Additionally, organic mulch can improve soil structure over time, as it breaks down and adds organic matter to the soil. This enhances the soil's moisture retention capacity even further. By creating an environment that promotes moisture retention, organic mulch plays a crucial role in supporting healthy plant development and reducing water stress on plants.

In contrast to this, options that mention attracting harmful insects or promoting weed growth are misleading, as well-managed organic mulch can significantly reduce weed growth and deter pests. Similarly, while organic mulch can help mitigate soil compaction over time by fostering healthy soil organisms, its primary and immediate benefit is moisture retention.