What is the purpose of using mulch in ornamental beds?

Using mulch in ornamental beds serves multiple beneficial purposes, which is why the choice emphasizing its ability to suppress weeds, retain moisture, and improve soil health is the correct one.

First, mulch acts as a barrier that inhibits the growth of weeds by blocking sunlight and reducing the likelihood of seeds germinating. This is particularly important in ornamental beds, where maintaining a clean appearance and allowing plants to thrive without competition from weeds is essential.

Secondly, mulch helps retain soil moisture by reducing evaporation. It keeps the soil cooler during hot weather and maintains a more consistent level of moisture for the plants’ root systems. This moisture retention is crucial for plant health, especially in dry periods.

Lastly, organic mulches decompose over time, contributing organic matter to the soil as they break down. This process not only improves soil structure but also enhances nutrient availability, benefitting plant growth and overall soil health.

In contrast, options related to improving soil drainage, fertilizing the soil, or encouraging pest habitats do not accurately reflect the primary functions of mulch in ornamental beds. While some types of mulch may indirectly affect soil drainage, the most prominent roles remain focused on weed suppression, moisture retention, and soil health enhancement.