About the Treegator® Drip Irrigation System: The Treegator® Drip Irrigation System offers approximately 10 hours worth of drip time. It has a 20 gallon capacity and 2 or 3 can be zipped together to fit larger trees. It is 3 feet tall when empty. The fill opening will fit a 1.5 inch diameter hose. Treegator® Drip Irrigation System must be used on a level surface or properly built mulch pile.