Out of the box, each level in a Family Garden supports up to 12 plants at a time. However, you may choose to leave some open spaces to create room for larger plant varieties, such as tomatoes or peppers. A Personal Garden can accommodate up to eight plants out of the box. Their 8 and 12 Pod Tray Lids (sold separately) allow you to adjust your space depending on the type and size of plants that you would like to grow for maximum output and efficiency. You can purchase both tray lids here, and make sure to check out this guide on how best to use them.