100% natural and peat free Compost Growing Discs are a fantastic way to provide your young seedlings with the best possible start in life. The pellets will protect them from damage while also allowing the easy aeration of root structure. Simply add water to expand and add seeds. You can then pot up or plant out. Made from 100% peat free, biodegradable coir potting compost Ideal for sowing seeds Promotes stronger, healthier plants by minimal disruption For use in any seed planting pot or tray Dia. 3.5cm