1 Lava Rock With Christmas Moss Attached  Care: Easy  Co2: No Growth rate: slow Placement: Foreground  Lighting requirements: Moderate  Color: green Max size: Expands to very large size, must trim to keep at bay Propagation: cut or pull apart a portion  Christmas Moss (Vesicularia montagnei) also known as xmas moss is a slow growing Foreground carpeting plant however it can be placed anywhere in the tank or attached to rocks or driftwood to slowly grow on and cover. This plant, like all plants, grows best with fertilizer and lighting around 6500k. This plant can be grown without co2. Fertilizer isn't necessary but does help.