Jiffy-7 Peat Pellets 30mm Seed Starting Plugs #730-1700 ea Full Case by Growers Solution Full case of 1700 each Jiffy-7 peat pellets #730 30mm. Jiffy products are proven helpers in growing plants. This pellet is filled with high quality substrate and then compressed to form a pellet. Jiffy-7 Peat Pellets offer quicker rooting due to the air pruning that stimulates fibrous root development within the plug. Peat pellets will produce stronger, more compact plants.