The oak tree is a large growing variety that grows up to 100 feet in height with a crown spread of 80 feet. Oak trees have a large root system that is sensitive to soil characteristics, pH and water content.
Oak trees grow best when planted in a well-draining soil that is also nutrient-rich, such as a sandy loam. This tree variety does not perform well in alkaline soil. Amend the planting area soil with ground rock sulphur to lower the pH value to 7.0 or under.
Amend the planting soil by working 2 to 3 inches of organic compost to a depth of 18 to 24 inches. Perform this amendment the fall season before the spring planting date. Adding organic compost will increase the nutrient value and water drainage of the soil.
Oak trees prefer a moderately dry soil and are susceptible to root rot when there is excess water around the root ball area. Apply a 3- to 4-inch layer of bark mulch around the tree to prevent weed growth and help hold moisture in the soil during the hot summer months. Placing mulch around the tree reduces the need for supplemental water applications.