... ,105,128,200,288 cells.(cell trays)no cell (Flat Tray)Sample time3-5days(plaster mould); 7-10days(copper mould/aluminum ... mould)AdvantageEnvironmentally-friendly material.The tray for starting seeds and transplanting seedling.UsageIdeal for greenhouse, farm ... , roof.Use for propagating vegetables, flowers and other plant from seed. 32 Cell Propagation Tray