Microgreens are tiny edible immature plants with a higher percentage of nutrients the the more mature versions. Haxnicks Microgreens Growing Mats are a contemporary natural plastic-free product making it easy to grow your own! The growing mat is made from coir fiber with natural latex. It is designed to fit the Haxnicks Babooo Seed Tray sold separately #50-1466 or you can cut to size to fit other trays. Works great for broccoli chard cauliflower cabbage salad greens herbs etc. Microgreens are ready – from seed to plate – in just a few weeks so they are satisfyingly quick to grow. They need very little space or equipment great for beginners and seasoned growers alike. Perfect for urban gardeners. By growing on a mat instead of in soil the roots are clean so washing is much easier. Biodegradable and compostable. 3 per package each mat is 13″L X 7.1″ W.