Micro-Mats hydroponic growing confetti is made from biodegradable wood fibers that are highly absorbent and have a very high water holding capacity. The confetti conforms to any container making it the perfect hydroponic grow medium for microgreens and wheatgrass in non-traditional containers. Micro Mat confetti from Handy Pantry is perfect for those looking to grow wheatgrass, barley grass, microgreens, or other plants, without the hassle of dealing with soil.