Tree Disease and Hurricane Season

— Written By and last updated by
en Español

El inglés es el idioma de control de esta página. En la medida en que haya algún conflicto entre la traducción al inglés y la traducción, el inglés prevalece.

Al hacer clic en el enlace de traducción se activa un servicio de traducción gratuito para convertir la página al español. Al igual que con cualquier traducción por Internet, la conversión no es sensible al contexto y puede que no traduzca el texto en su significado original. NC State Extension no garantiza la exactitud del texto traducido. Por favor, tenga en cuenta que algunas aplicaciones y/o servicios pueden no funcionar como se espera cuando se traducen.

English is the controlling language of this page. To the extent there is any conflict between the English text and the translation, English controls.

Clicking on the translation link activates a free translation service to convert the page to Spanish. As with any Internet translation, the conversion is not context-sensitive and may not translate the text to its original meaning. NC State Extension does not guarantee the accuracy of the translated text. Please note that some applications and/or services may not function as expected when translated.

Collapse ▲
Inspection of large landscape trees is an important part of storm readiness in Eastern North Carolina. And conveniently, the fall and winter months are a good time to look for the presence of fruiting structures of various wood-decay pathogens.
For example, we recently spotted the large, distinctive conk of Phaeolus schweinitzii growing at the base of a large loblolly pine (Pinus taeda) in the Clarks area of Craven County. According to the University of Massachusetts, This fungus causes a brown rot, meaning “the cellulose and hemicellulose are preferentially targeted while the lignin remains in a modified form”. Further, “Brown rot results in severe reductions in wood bending strength, making trees susceptible to stem breakage and uprooting under loading from strong winds”. While an infected pine may still be structurally sound, it’s important to have the tree inspected by an arborist if the conks have begun to appear and are showing up annually. This is especially the case if the pine is within striking distance of a house or other structure.
Thanks to the NC State Plant Disease and Insect Clinic and Duke University for confirming the ID.

Phaeolus schweinitzii fruiting bodies are found at the base of infected pines.

This fruiting body measured about 10″ across at the widest point.

The same structure, showing the underside. When submitting images to a mycologist for fungal ID,
it’s critical that your images include the underside as well as the topside of the conk or mushroom.

This close-up view of the underside shows the angular pores (as opposed to rounded pores) associated with Phaeolus schweinitzii.