Ross 10233A Economy Model Feeder, Delivers Water & Food Directly to The Root Zone, 1 Unit, yellowBrand: Ross Color: yellow Features: Ross Root Feeder System stops pollution from fertilizer run off and costly waste of water from evaporation Deep feeding fertilizer system supplies nutrients at the root level, where the active roots are growing; Use With Ross Root Feeder Fertilizer Cartridges (not included) Encourages deep root development for improved tree and shrub stability Adjustable Flow Rate Lever Allows Light Or Heavy Watering Fertilizing;