12 Hole Plant Seeds Grow Box Propagation Nursery Seedling Starter Tray 10 SetsHigh quality clear plastic trays of this seed grow kit make it easy to observe your plants without interrupting the process. Adjustable vents of this seed trays allow you to regulate the temperature and humidity of your seedling environment, so you have total control over the growing process With drain hole at bottom of each cell for proper drainage, reduce roots oversaturating. Reusable and a great way to foster a beautiful and healthy garden.