The Top 5 Tree Infections Around Kansas City

Kansas City is home to a variety of beautiful trees that line our streets, parks, and private properties. However, as lovely as they are, our trees are vulnerable to a range of infections and diseases that can weaken, disfigure, or even kill them if left untreated. In our region, certain tree infections are more common and pose significant threats to local tree populations. At The Climbing Grunt Tree Service, we’ve seen firsthand how these diseases can impact trees, and we’re here to help you identify and prevent them.

Let’s take a look at the top five tree infections in the Kansas City area and what you can do to protect your trees.

1. Oak Wilt (Bretziella fagacearum)

Oak Wilt

Oak Wilt is one of the most dangerous and widespread tree diseases in Kansas City, especially affecting oak trees. It’s caused by a fungal pathogen that attacks the vascular system of the tree, blocking the flow of water and nutrients. Oak trees, particularly red oaks, are highly susceptible, and once infected, they can die within a few weeks to months. Symptoms include wilting leaves, brown or tan spots on leaves, and a rapid decline in the tree’s overall health.

What makes Oak Wilt especially dangerous is its ability to spread quickly through root systems, as oak trees often share roots with nearby oaks. The disease can also spread through insects, like sap-feeding beetles, that carry the fungus from tree to tree.

How to Prevent It:
To prevent Oak Wilt, avoid pruning oak trees during the growing season, especially in spring and early summer when the fungus is most active. If you do need to prune, be sure to disinfect your tools between cuts. Infected trees should be removed quickly, and their stumps treated with fungicide to prevent further spread.

2. Emerald Ash Borer (Agrilus planipennis)

Emerald Ash Borer

The Emerald Ash Borer (EAB) is an invasive beetle that has caused significant damage to ash trees across Kansas City. This insect larvae feed on the inner bark of ash trees, disrupting the flow of nutrients and water. Over time, this leads to the death of the tree. EAB has killed millions of ash trees across North America and continues to spread. Infestation signs include D-shaped exit holes, thinning crowns, and bark splitting.

Ash trees are particularly vulnerable to EAB because they have no natural defenses against this invasive species. Unfortunately, once an ash tree is severely infested, the tree is often beyond saving.

How to Prevent It:
Early detection is key. If you have ash trees on your property, it’s important to inspect them regularly for signs of EAB. The best defense against the beetle is preventative treatment with insecticides, particularly for trees that are not yet infested. If you suspect an infestation, contact a professional tree service immediately to assess the damage and consider removal or treatment options.

3. Dutch Elm Disease (Ophiostoma novo-ulmi)

Dutch Elm Disease

Dutch Elm Disease (DED) has been a significant problem in Kansas City for decades, severely impacting the American elm population. The disease is caused by a fungus that’s spread by elm bark beetles. The fungus blocks the water-conducting vessels in the tree, causing wilting, yellowing leaves, and eventual death. Elms affected by DED typically show rapid decline, and the disease can quickly spread from tree to tree.

While Dutch Elm Disease was once primarily a problem in the eastern U.S., it has made its way to Kansas City and continues to threaten local elm populations. Elms are an iconic part of many urban landscapes, so DED poses a significant risk to the aesthetic and ecological health of the area.

How to Prevent It:
Prevention involves controlling the beetle population by treating trees with insecticides and pruning infected branches. If Dutch Elm Disease is suspected, it’s essential to remove the infected trees quickly to prevent the disease from spreading to healthy trees. Regular monitoring and proper maintenance can help reduce the chances of an infection.

4. Root Rot (Various Fungal Pathogens)

Root Rot

Root rot is a serious infection that can affect a variety of tree species in Kansas City. It occurs when fungi, such as Armillaria or Phytophthora, attack the roots of a tree, causing them to decay. This disease thrives in damp, poorly drained soils, and can be especially problematic during wet seasons. Affected trees often show signs of yellowing leaves, stunted growth, and wilting, and they may eventually die if the root system is severely compromised.

While all trees can be susceptible to root rot, species like maples, oaks, and pines are particularly vulnerable. Root rot can spread quickly if not detected early, especially in trees that are already stressed by other environmental factors.

How to Prevent It:
Avoid overwatering and ensure that your trees are planted in well-drained soil. If root rot is suspected, professional treatment, including fungicides and soil amendments, may be necessary to stop the spread. Infected trees may need to be removed to prevent contamination of other nearby trees.

5. Powdery Mildew (Various Fungal Pathogens)

Powdery Mildew

Powdery mildew is a common fungal infection that affects a variety of trees and shrubs in Kansas City, particularly during the humid summer months. This disease appears as a white, powdery coating on the leaves and stems of affected plants. While it’s typically not fatal, powdery mildew can weaken trees over time, causing stunted growth, yellowing leaves, and leaf drop.

Powdery mildew is most common on trees such as dogwoods, lilacs, and crabapples. The disease thrives in warm, dry environments with high humidity, and it can spread rapidly if not controlled.

How to Prevent It:
To control powdery mildew, ensure proper air circulation around your trees and avoid overhead watering, as wet leaves can promote fungal growth. Pruning infected branches and removing fallen leaves can also help reduce the spread of the disease. Fungicides may be necessary for more severe infestations, but it’s best to consult with a professional to determine the best course of action.

Conclusion

Kansas City’s trees face a variety of infections that can weaken, deform, or even kill them if not properly managed. From Oak Wilt to the Emerald Ash Borer, understanding these common tree infections can help you take preventative measures to protect your trees. Regular tree inspections, proper care, and timely treatments are key to ensuring the health and longevity of your trees.

At The Climbing Grunt Tree Service, we’re here to help you identify and address tree infections before they cause serious harm. If you suspect your trees may be infected or you’d like a professional to assess their health, don’t hesitate to reach out. Our expert arborists can provide the care and guidance you need to keep your trees thriving.

Climbing Grunt Tree Service
Your trusted partner in tree care and health.