Planters Pride RZG0050 50-Count Fiber Grow Pellets Greenhouse Kit Includes a 11-inch x 21-inch carrying tray that accommodates all 50 Fiber Grow Pellets Also includes a snug fitting Humidity dome to provide the most optimum growing conditions Fiber Grow Pellets are dried and compressed in a Biodegradable fine mesh netting Easy to use, just add water to expand the pellets and add your seeds Once seedlings are ready to be replanted, you can plant the Fiber Grow pellet directly into the ground or in a planter