A cover crop is a type of plant grown primarily to improve soil health, prevent erosion, and enhance biodiversity. These crops are typically planted during the off-season when main crops are not being cultivated. They help to protect the soil from harsh weather conditions and can also suppress weeds. Common examples of cover crops include clover, rye, and vetch. When these plants decompose, they add organic matter to the soil, which can improve its structure and nutrient content. Additionally, cover crops can help fix nitrogen in the soil, benefiting subsequent crops planted in the same area.