Corn gluten meal, a natural byproduct of corn processing, is an effective and environmentally friendly way to prevent weeds in a garden. Acting as a pre-emergent herbicide, it works by inhibiting the development of roots in germinating weed seeds. When weed seeds sprout, they require roots to absorb nutrients and water. Corn gluten disrupts this process, effectively starving the seedlings before they can establish themselves. In addition to its weed-preventing properties, corn gluten is rich in nitrogen, an essential nutrient that acts as a natural fertilizer, promoting the health and growth of established plants. To use corn gluten effectively, timing is critical. It should be applied early in the growing season, just before weed seeds begin to germinate—typically in early spring and again in late summer. After spreading it evenly across the soil, a light watering activates its properties, forming a protective barrier that minimizes seed-to-soil contact. However, gardeners should avoid using corn gluten near newly planted seeds, as it will inhibit their growth in the same way it affects weeds. While it does not kill existing weeds, regular application over multiple seasons significantly reduces weed populations. Safe for children, pets, and the environment, corn gluten meal is an excellent dual-purpose solution that prevents weeds while enriching the soil, making it a valuable tool for organic gardening.