Plant Best 42mm Coconut Coir Pellets are a natural, sustainable growing medium ideal for seed starting and plant propagation. Made from high-quality compressed coconut coir, each pellet expands rapidly with water to form a lightweight, well-aerated substrate that supports healthy root growth. Designed for easy use and clean transplanting, these 42mm coir pellets offer excellent moisture retention and drainage, making them perfect for vegetables, herbs, flowers, and seedlings in greenhouses, nurseries, or home gardens.