These are attached to low stakes and are placed close to the trunk of the tree, spraying at ground level. They are perfect for medium to large shrubs and trees. The amount of water is easily adjustable and the large aperture makes them easy to clean. They are also very inconspicuous. They are especially useful for small shrubs and rose bushes, pots and window boxes.
Water quality is an important consideration.
City water, or well water free of iron-algae bacteria and heavy calcium content, is a must. It also is important to install a back-flow preventer to ensure that no stale water can get back into your well or city water system. Irrigation with micro-sprinklers is usually organized into zones. For most yards, one to three zones are more than adequate. Each zone will be turned on and off separately, either manually or by a timer.