A unique propagating tray and cover system for both rooting of cuttings and starting seeds. The holding tray holds 8 four unit cells. The black plastic units open like a book to expose the soil and roots for easy removal. Plants can be planted directly in your garden. The roots are directed downward by grooves in the cells and the bottom is open to "air-prune" the plants. Reuseable. A great gardening gift. 3 inch deep cells.