Potting soil and pot all in one ¨C just add water and seeds! Our netted pellets come in your choice of two convenient sizes. Pots are 36mm (1 3/8¡±) or 42mm (1 ?¡±) diameter.? Just add warm water and both quickly grow to 2¡± in height for easy seed starting.? Made from coconut coir to grow seedlings to transplant size.? Easy to use and eliminates the mess of bagged soils.