Common Diseases That May Affect Red Oak Trees
In most cases, the value of a healthy, mature tree is easy to see. Trees add color and texture to your landscape design while providing shade to aid in energy-efficiency, but they can also add value. The red oak is a popular tree for many homeowners because of its ease of growth and enormous height. Some varieties of this tree, such as the Northern red oak, can grow up to 100 feet tall. Unfortunately, diseases can quickly infect and take over this tree, affecting its look and future growth. Without proper diagnosis and efficient treatment, your red oak can die. Here are a few common diseases that can affect your red oak tree.
Oak Wilt
Like the name suggests, this common disease occurs in oak trees. A fungus starts in the roots, spreading upward into the tree. In many cases, the fungus can spread through the roots to other trees that are planted nearby.
In the early stages of the disease, an oily green residue will appear on the foliage of the tree's canopy. This green residue will change to a red or tan color quickly. The leaves may begin to fall soon after the residue/discoloration appears.
While surprising to learn, oak wilt can kill a tree within months. Therefore, it is important to understand the signs for early intervention. Applying a fungicide as soon as you notice the oily green residue is imperative. Trimming off the affected foliage is also beneficial.
One of the most important things you should know, though, is once the tree is infected and foliage begins to drop, the tree should be removed from your landscape. This is the best way to prevent oak wilt from spreading through the roots to other trees in your landscape design.
Powdery Mildew
Caused by a few different types of fungi, powdery mildew is another disease that can affect your red oak tree. Fortunately, it is also one of the easiest diseases to diagnose and treat.
A grey or white powdery residue will grow on the oak tree's leaves, giving the disease its name. When you first notice this residue, apply a fungicide to your tree. If left untreated, the mildew will spread from the leaves to the branches and trunk, eventually defoliating your tree and increasing the risk of breakage.
Prevention is key if you want to protect your tree from powdery mildew. Because this fungus thrives in moisture, ensuring air can circulate through your tree properly is helpful. Be sure to trim limbs and branches from the tree's center to improve air circulation.
Contact a business like Souliere & Son Tree Specialists for more information.
