How to set up drip watering for container gardens Make container gardening easy with these simple steps A single emitter provides adequate water for pots up to 10 inches wide. An elbow fitting takes the tubing over the pot edge at a 90° angle; a U stake keeps the tubing and emitter in place. Pinterest Two emitters are attached to a T fitting This configuration will water medium-size pots up to 15 inches wide. A notched stake holds the tubing in position. A circle of emitter line (with factory-installed emitters), held down by U stakes, will keep the soil moist in a large container such as this 20-inch-wide pot. Multi-outlet emitter (sometimes called a bubbler) can be used to thoroughly water the soil in a large container. It can be adjusted to change the spray. Quarter-inch tubing hides along the base of a wooden planter, then follows a crack to the top of the container. (For brick or concrete walls, drill holes with a masonry bit and use masonry nails.) For more information, go to Drip watering for containers.