Understanding and Managing Tree Fungus

June 25, 2024

3 common tree diseases, tree fungus and blight

3 Common Tree Diseases: Blight, Yellow Fungus, and Canker

Trees not only enhance the beauty of your landscape but also contribute to the value of your property. However, they can fall victim to various fungal diseases that threaten their health and longevity. At Splintered Forest Tree Services, we believe in proactive care to protect your trees from these common fungal infections. Let’s explore some prevalent tree fungus species, how to identify them, and the best strategies for treatment.

1. Yellow Tree Fungus: Yellow tree fungus, also known as bracket fungus or sulfur fungus, is easily recognizable by its vibrant yellowish-orange hue. It poses a significant threat to tree health, causing internal rot. This is also called chicken of the woods. 

    • Identification: Look for yellowish-orange growth along the trunk of trees.
    • Trees Affected: Maple, Ash, and Oak trees are susceptible, but it can also be found on beech, chestnut, cherry and even yew.
    • Treatment: Prune branches carefully to prevent water accumulation, minimizing opportunities for fungal growth. Avoid excessive pruning, as this can create entry points for the fungus.

2. Canker Diseases: Canker diseases, caused by fungal pathogens, result in dead areas on tree bark or branches, impeding nutrient circulation and causing branch dieback.

    • Identification: Dead areas on bark, bulging discolored sores or branches indicate canker infections.
    • Trees Affected: Various tree species, including Honeylocust, Poplars, Willows, and Spruces.
    • Treatment: Prompt removal of infected branches is crucial. Prevention through proper tree care practices, such as ensuring adequate growing conditions and minimizing injuries, is essential.

Learn more about Nectria Canker In Honey Locust Trees.

Read about Cytospora Canker: The Cytospora canker disease is common amongst many trees in the Denver area.

Learn about canker disease in Aspens, Poplars and Spruces trees.

3. Leaf Blight, or Anthracnose: Primarily targets tree leaves, leading to defoliation and weakened tree health. While challenging to eradicate entirely, proactive measures can help manage its spread.

  • Identification: Watch for characteristic blotches on leaves, and early leaf drop. .
  • Trees Affected: Maples, Ashes, Oaks, and Sycamores are commonly affected.
  • Treatment: Regular pruning to remove infected leaves and branches can help control the spread. Fungicidal treatments may also be effective but should be used judiciously. Nutrient supplements or soil amendments can be applied to improve the trees ability to fight off infections. 

Needle Blight: Needle blights affect pine trees by causing needle discoloration and eventual death. Early detection and intervention are key to mitigating its impact.

  • Identification: Look for reddish-brown spots on green needles.
  • Trees Affected: Longleaf pines, Scots pines, and other pine species.
  • Treatment: Application of fungicides during appropriate seasons can help control needle blight spread.

At Splintered Forest Tree Services, we understand the importance of timely intervention and tailored solutions to combat tree fungus. Our certified arborists and Plant Health Care Specialists are equipped with the expertise to recognize and provide resources to assess, diagnose, and treat fungal infections, ensuring the health and vitality of your trees. Don’t let tree fungus compromise the beauty of your landscape—contact us today for comprehensive tree care solutions tailored to your needs.