Trees and shrubs need periodic deep watering. Apply enough water to wet the entire root zone and to encourage deep rooting. Deeper roots are better able to withstand periods of drought; shallow watering, on the other hand, leads to shallow roots and plants that are susceptible to drought and strongly affected by fluctuating temperatures. Deep root watering reduces surface evaporation and saves water too. Root irrigatorDelivers water directly to the root zone of trees and shrubsSaves water by eliminating wasteful runoff or evaporationEncourages deep root growthEasily attaches to a water soluble hose end sprayer for use as a root feederDrills its own holes, avoiding diggingLeaves beneficial aeration holesDozens of additional uses as a water blaster