Which statement about mulch is true?

• A. Mulch only cools soil
• B. Mulch reduces weed growth and conserves moisture
• C. Mulch attracts pests year-round
• D. Mulch should never be used

Answer: (B)

Mulch creates a protective layer on the soil that blocks light to weed seeds and reduces water loss from evaporation. By shading weed seeds, it prevents many from germinating, which lowers weed growth. By retaining moisture, it helps soil stay cooler and reduces the need for extra watering, supporting healthier root conditions. It also moderates soil temperatures and, as organic mulch decomposes, slowly enriches the soil with organic matter. This combination makes mulch effective for both weed suppression and moisture conservation, so the statement that mulch reduces weed growth and conserves moisture is the best choice. Mulch does more than just cool soil, it’s not a general pest magnet year-round, and it is widely used rather than never used.