What distinguishes mulch from soil amendments?

• A. Mulch is worked into the soil.
• B. Soil amendments are placed on top of the soil.
• C. Mulch prevents soil erosion, while amendments modify soil properties.
• D. Soil amendments improve aesthetics, while mulch does not.

Answer: (C)

Mulch and soil amendments serve different purposes in gardening and landscaping, and understanding these distinctions is key. The correct choice emphasizes that mulch primarily functions as a protective layer over the soil, while soil amendments are incorporated into the soil to enhance its properties.

Mulch, typically made from organic materials like wood chips, straw, or leaves, is applied to the surface of the soil. Its primary functions include moisture retention, temperature regulation, weed suppression, and prevention of soil erosion. By protecting the soil surface, mulch also helps to create a stable environment for plant roots.

On the other hand, soil amendments, such as compost or peat moss, are mixed into the soil to improve its structure, nutrient content, drainage, and aeration. While amendments do alter the soil's physical and chemical properties, they do not serve the same protective and aesthetic functions that mulch does.

Thus, the distinction highlighted in this choice—that mulch prevents soil erosion while amendments modify soil properties—accurately captures the primary roles of each. This understanding is crucial for implementing effective landscape practices that promote healthy, sustainable growth.