Wonder seed starter! Jiffy-7's expand seven times when put in water. They are quickly ready for planting seeds or cuttings. They contain sterile sphagnum peat with enough nutrients to grow the plants to full planting size. When ready, plant pot and all and the seedling continues to grow without set-back. Jiffy-7 Peat Pellets are clean, neat time-savers when starting flowers and vegetables.