Which practice aids in conserving moisture in landscaped areas?

Mulching is a highly effective practice for conserving moisture in landscaped areas. When organic or inorganic materials are applied as a layer on the soil surface, they create a barrier that reduces evaporation. This means that less water is lost to the atmosphere, which helps retain soil moisture for longer periods. Additionally, mulch can help regulate soil temperature, promoting a suitable environment for plant roots and reducing stress on plants during hot weather. Furthermore, as organic mulches decompose, they improve soil structure and enhance its water-holding capacity.

While regular watering is essential for maintaining plant health, it doesn't necessarily conserve moisture in the same way that mulching does, since it may lead to surface evaporation if not managed properly. Reducing plant density may help in terms of competition for water but doesn't directly address moisture retention. Fertilizing can benefit soil and plant health, but it doesn’t play a direct role in conserving moisture. Therefore, mulching stands out as the clear practice specifically tailored to conserve moisture in landscaped areas.