Texas FFA Nursery Landscape Practice Exam

What is the primary purpose of mulch in landscaping?

1. To improve soil structure

2. To suppress weed growth

3. To enhance plant growth

4. To provide nutrients

The correct answer is: To suppress weed growth

The primary purpose of mulch in landscaping is to suppress weed growth. By covering the soil surface, mulch acts as a barrier that blocks sunlight, significantly hindering the germination and growth of weed seeds. This effectively reduces competition for water and nutrients that would otherwise be utilized by desirable plants, leading to a healthier landscape. Additionally, while mulch can improve soil structure, enhance plant growth, and even contribute some nutrients as it decomposes, its main function remains weed suppression. By keeping weeds at bay, mulch not only helps in maintaining a neat appearance but also minimizes the need for chemical herbicides, supporting a more environmentally friendly approach to landscaping. Overall, the benefits of mulch contribute to a healthier and more sustainable garden environment.