Verticillium wilt is a plant disease caused by soil-borne fungi from the genus Verticillium. It affects a wide range of plants, including vegetables, trees, and ornamental plants. The fungus invades the plant's vascular system, leading to wilting, yellowing leaves, and stunted growth. Infected plants may show symptoms such as dark streaks in the stems and leaves that eventually die off. Control measures include crop rotation, using resistant plant varieties, and improving soil health to reduce the presence of the fungus. Proper sanitation and management practices can help prevent the spread of Verticillium wilt.