Zoo Med’s New Zealand Sphagnum Moss is soft and holds many times its weight in water. That means it will help keep the air in your box turtle’s home humidified longer. It lasts longer than many other substrate choices and is even washable and re-usable! If you have live plants in your turtle’s pen, it’s also good for putting around the base of the plants. It’s best used with other bedding materials rather than on its own.
As a bonus, it’s sustainably harvested so you’re not hurting the environment by using it.