Simple Method for Deep Watering a Tree 1 Dig a hole about 1 meter deep and place a PVC pipe vertically next to the tree. 2 Fill the pipe with gravel to keep the water flowing and prevent blockages. 3 Plant the tree, making sure the roots are well set in the soil. 4 Pour water directly into the pipe so it reaches the roots deep underground. 5 Repeat watering regularly to ensure proper hydration and strong root development. This method saves water, strengthens tree growth, and protects it from drought stress.