Pack of 4 - TreeGator Tree Watering Bags. Supply newly planted or established trees that have branches at least 25" off the ground or higher with the water it needs to thrive all season. These TreeGators save you time, money, and are easy to setup. It reduces your regular watering frequency by 50% and saves you time by reducing your watering cycle up to 80%. TreeGators provide slow and deep water penetration and promote deep root growth. Setup is quick and easy: wrap the bag around a tree trunk, fill with water from your hose, and it should empty in 5-9 hours. Two bags can be zipped together to cover 4-8" diameter trunks if desired.