This aquatic moss will also grow on land in constantly wet conditions and humidity's of 80% or above. Simply position the plants in the desired position and they will quickly establish, gradually spreading out to form a carpet. They can be trimmed to keep them compact and growing where they are wanted. Mosses will tolerate bright light or shade providing they have the correct conditions. They will not tolerate dry conditions, or hot scorching light. Size: Natural products will vary in size