Limit trimming only to dead or broken branches on newly planted trees. Two to three years after planting you can begin developmental trimming to shape the tree. Learn the growth habits of your particular type of oak tree
Decide which branch looks like it is the most vertical and centered on the trunk and choose that one to be the dominant leader. [2] X Research source Trim the other branches that may turn into other leaders by reducing their size to allow more sunlight to reach the dominant leader you chose. Keep the dominant leader long.
Shorten large branches by cutting them back to a lateral branch or bud. Always make angled cuts to encourage growth
Damage doesn’t necessarily indicate a disease—it could be due to a lightning strike, lack of sun, or even just that the branch got too heavy. [5] X Expert Source Matt BowmanGardener & Owner, Tradition Market & Garden Expert Interview. 21 April 2020. If you’re not sure what may have caused damage to your oak tree, check the bark on the oak tree for white, flaky scaling that could indicate pests. [6] X Expert Source Matt BowmanGardener & Owner, Tradition Market & Garden Expert Interview. 21 April 2020.
Removing dead, diseased or broken branches Remove branches to create more sunlight or air flow to the canopy of the tree. Be careful doing this as you don’t want to “thin out” the canopy.
Make an undercut on the branch about 1 to 2 feet out from the branch collar, or the point where it connects to the trunk. Make a second cut on the top of the branch a few inches farther out that the undercut. This prevents the falling branch from tearing the bark off of the trunk. After the bulk of the branch falls, you can trim back the 1 to 2 feet the you left on the tree by cutting it at an angle 1 to 2 inches (2. 5 to 5. 1 cm) from the branch collar.
Prune carefully to not injure the tree excessively, and make sure the tree has plenty of water. Trees will naturally seal cuts; it is not necessary to apply an artificial sealant as this may trap microorganisms inside the tree and lead to disease.
