3 pack. This do-it-all heavy-duty plastic, red Tomato Crater is just what your tomato plants need. It warms the soil, retains ground moisture, eliminates weeding, and even controls cutworms and other ground insects. The design ensures that water and fertilizer go directly to the roots. The Tomato Crater comes in 2 interlocking parts, so you can place around plants without risk of damaging the fragile seedlings. Also great for other vegetable plants. Dimensions: 11 1/2 inches across by 2 inches deep.