The walnut tree does not need much water except for the first 2-3 years. If we order the species which are demanding water much, plums, apples, pears, cherries, peaches, apricots, and almonds are respectively. As you can see, walnut is not even included in this order. However, this does not mean that the walnut sapling will be planted and not watered for 3 years. According to the distribution of rainfall in summer, water should be given 2-3 times in order to feed the tree during dry periods. As the soil has sufficient moisture in the spring, the trees grow quickly and have large leaf surfaces. However, if this moisture in the soil is lost later, the growth of the shoots slows down, the top buds form early, and growth ceases after a while. So the soil moisture needs to be well adjusted. Besides this, the tree which does not have moisture can cause the buds that start to form at the end of spring and early summer to remain small. This causes new shoots to remain small in the next spring and even the affected walnut flower buds cannot provide fruit. Because of these effects, it is necessary to keep the irrigation work in the walnut tightly from the beginning.