Burpee 95072 72 Self Water Seed Starting Kit, Cell, Black Burpee 72 Cell Self Watering seed starting kit comes with one watering tray and two 36 cell planting trays with self watering mat and reservoir tray 72 Burpee natural coconut fiber super growing pellets and clear greenhouse dome Expert tip: Place super growing pellets flat-side down, and add very warm water slowly for maximum expansion