CONVENIENT  ORGANIC WHEATGRASS, MIXED SALAD, SUNFLOWER, RAMBO RADISH, PEA REFILL KIT – These refill kits contain easy-to-follow instructions,  pre-measured fiber soil.DESIGNED to be used with MICROGREENPROS Wooden Planter Tray, sold separately. No need to measure soil or seeds as these refill kits fit the planter perfectly!