Using the GreenStalk's patented watering system, the GreenStalk Spring adds an automatic watering system to make taking care of your planter even easier! Each kit includes enough components to set up a 5 Tier Original or  7 Tier Leaf. Use your favorite timer to control how often your plants are watered. Can be used with bases, but the GreenStalk Spring would need to be disconnected before rotating or moving your planter.