Designed specifically for GreenStalk planting, the reusable Carrot Cap makes planting easier and cleaner. Conserve soil and help prevent debris from clogging the watering system by using the Carrot Cap to cover the planter's center funnel when planting. The Carrot Cap is ideal for planting seeds and determining planting depth. Refer to the inch rings on each carrot to ensure proper planting. Temporary cover for the center funnel while filling tiers with soil Includes four colorful carrots: Orange, Razzleberry, Lemon, and Blackberry Built-in depth guide with measurement lines at ½", 1", and 2" Proudly made in the USA Not for use with the Top Water Reservoir. Keep out of reach of children.