Leyland cypress, a popular hedge tree, may grow 2 to 3 feet per year. It reaches heights of 50 feet and may grow up to 30 feet wide. With a thick wall of branches and needles, it forms an effective means for screening out undesirable noises and views. Leyland cypress are sometimes purchased as Christmas trees and then planted outdoors after the holidays. Leyland cypress trees require sunny locations with well-drained soil. They are more subject to diseases in wet or poorly drained areas. Watering techniques for Leyland cypress depend on the age of the tree.
Water a young Leyland cypress near the trunk of the tree. Turn on the water hose slowly and let the water run until the soil around the tree is wet to a depth of 18 to 24 inches.
Allow the soil to dry between waterings. Check the soil and water approximately every one to two weeks, unless 3/4 to 1 inch of rain falls.
Water Leyland cypress trees that are 6 years or older by placing a soaker hose around the tree under or just beyond the edges of the branches. As a Leyland cypress tree ages, the roots that absorb water extend farther from the base of the tree. Turn on the water and allow it to wet the soil to a depth of 18 to 24 inches.
Allow the soil to dry between waterings and water about every week or two unless it rains.