Abstract: A watering system for use in a greenhouse has a hose carrier that is supported entirely on a single track, the track having a rectangular cross-section. The hose carrier is connected by a cable that winds through a series of pulleys to a drive system so that the carrier moves at one-half the speed of the drive system as the drive system moves along the track in either direction. The water supply and electrical supply are connected at the approximate mid-point of the track and the hose carrier distributes the hose and electrical conductor among support brackets located along the track so that neither the hose nor the conductor become tangled. The tension on the hose and conductor is minimal as each support bracket has rollers thereon and the hose and/or conductor are not used to apply force to the hose carrier to move it along the track.