black walnut

Water is an important part of keeping black walnut (Juglans nigra) trees healthy and growing. Watering should take place during the growing season, typically at least once a week during heavy rainfall periods and every 1 to 2 weeks during periods of normal rainfall. During the fall and winter, watering should only be done when the soil is dry. The amount of water needed depends on the size of the plant and the soil type. In general, young trees should be given about 20 gallons of water per session, while larger trees may need up to 50 gallons of water for a single watering session. When watering black walnuts trees, use the same depth of water for each session and water at the root zone to ensure that all of the roots are receiving adequate amounts of water.

Black walnut trees (Juglans nigra)require full sun to thrive. The sun should provide at least 8 hours of direct sunlight each day, but ideally 10-14 hours. This should occur throughout the entire growing season, beginning in early spring and ending in late autumn. The tree should be positioned so that the canopy receives full sunlight from morning to sunset. If possible, avoid planting in windy areas as this can have a negative effect on the tree.

Black walnuts should be pruned in late winter (February to March) to maintain their shape and encourage healthy growth. Pruning should be kept light to moderate; too much pruning can encourage overproduction of water sprouts which weaken the tree and reduce its longevity. Special care should be taken around the main trunk to avoid putting too much stress on the tree. Make sure to take off any dead, diseased, damaged, or crossed branches that could be a hazard to the health of the tree. Also, avoid pruning off any new growth as this can potentially stunt future growth. It is important to remember that pruning should only be done where absolutely necessary - it is better to do less than more.