Shelf-like conks and clusters of mushrooms appearing on trunks and roots after the rains are more than a seasonal curiosity.
They are the fruiting bodies of wood-decay fungi, and they usually mean the fungus has been working inside the tree for years. Conks on the trunk point to heart rot, while mushrooms at the root flare can signal decay in the roots that anchor the tree.
Not every fungus means removal. Some trees wall off decay well and stay sound for decades. What matters is how much solid wood remains, especially on a large fir, redwood, or tanoak near a home, driveway, or road.
Our ISA Certified Master Arborist evaluates decay with an eye toward saving the tree whenever it is safe. A photo taken when fungal growth first appears helps track how quickly things change.
#TreeHealth #CertifiedArborist #HumboldtCounty #EurekaCA
A close-up of a shelf conk or mushroom cluster on a trunk or root flare from a real Humboldt job, ideally with part of the tree visible for scale. Authentic field photos build credibility better than stock fungus images.
Canva text suggestion: "What That Mushroom Is Telling You" or "Fungus Outside, Decay Inside?"