A self-watering tray device having an integral internal irrigation system, and a method of watering allowing water to be supplied by means of standard garden water hose and existing water faucet. A plurality of said self-watering trays capable of being daisy-chained in a serial configuration to allow a single source of water from a standard water faucet and standard garden water hoses to provide irrigation water to all of said plurality of self-watering trays and non-self-watering planters positioned thereon.