Texas FFA Nursery Landscape Practice Exam

What is the primary benefit of using mulch in gardening?

1. Enhances soil texture

2. Prevents soil erosion

3. Suppresses weed growth

4. Improves soil drainage

The correct answer is: Suppresses weed growth

Using mulch in gardening primarily serves to suppress weed growth. When a layer of mulch is applied to the soil surface, it acts as a barrier that blocks sunlight from reaching the weeds, which inhibits their ability to germinate and grow. This not only reduces the competition for nutrients and water between weeds and desirable plants but also helps maintain a neat and attractive appearance in garden beds. Additionally, mulch contributes to moisture retention in the soil, further benefiting the plants. While it does have other advantages, such as enhancing soil texture, preventing soil erosion, and improving drainage, its chief purpose in many gardening contexts is to control weed populations effectively. This makes it a vital practice for gardeners seeking to maintain healthy plant growth with minimal manual weeding efforts.