Microsprinkler systems for containers and small planting areas are often referred to as "drip" irrigation. Correctly installed, these systems make it easy to deliver the right amount of water to plants.
A backflow-prevention device keeps irrigation water out of your household water supply. A filter prevents tiny openings from getting clogged. Water is carried to the vicinity by 3/4-inch supply hose, and 1/4-inch distribution tubing delivers it to the containers. You may want to add a timer to turn the water on and off automatically.
If you intend to bury water lines or install a larger system, check local codes and discuss your plan with an inspector.
Several hours to connect a simple watering system for five or six containers
Groove-joint pliers, screwdriver, tubing cutter, hole punch, hammer
Making simple plumbing connections
Draw up your proposed system and show it to an irrigation retailer or mail in a form to a sprinkler manufacturer
Microemitters and sprayers, 3/4-inch supply hose, 1/4-inch distribution tubing, connectors, caps, stakes, clips, clamps