This self-watering peat pellet tray makes seed starting easy. Jiffy Self-Watering Greenhouse tray is made with a special reservoir and water-wicking mat that keeps seeds moist for up to 10 days. The mat wicks the correct amount of water so seedlings don't dry out too quickly. The peat pellets can be planted into the ground along with the seedling, keeping the roots intact to reduce transplant shock.