With these poles you don't have to worry about them drying out any more. Just fill up the top part of the pole with water and set the flow rate as you wish. The system will slowly release the water into the moss, giving a steady and even distribution of moisture.    The pole also has a netting at the base, so the moss does not fall out and into your substrate.  

The moss poles are stackable.    

Includes 1 self-watering moss pole.