A garden hose with a fan nozzle or spray attachment is convenient for watering new sprouts or transplants, or other plants that need frequent, light waterings. However, deep penetrating waterings take a long time with a handheld hose.

A portable lawn sprinkler can provide slow overhead watering for deep penetration, but it is important to select a sprinkler that fits the size and shape of your garden to avoid wasting water on the sidewalk or to evaporation.

Your sprinker’s watering rate should be set to about 1/2" per hour because a faster rate will cause runoff in most soils. To determine the watering rate of your sprinkler, place small cans at various places within the sprinkler’s reach, then check the level of water in the cans at 15-minute intervals.

Consider using a soaker hose that applies water slowly and directly to the soil. Simply lay it at the base of the plants and leave in place, or move it around the garden.

Also, timing your garden watering is important. The morning is the best time for watering. Less water will be lost to evaporation than if you water during midday. Evening waterings can cause plant disease because foliage and roots can stay wet too long.