The White Rot Fungus (Various Basidiomycota (Trametes, Ganoderma, Pleurotus spp.)) is bleached white to pale yellow wood; fruiting bodies colorful (orange, brown, white) and typically measures Microscopic hyphae; fruiting bodies (brackets/conks) can be large. White rot fungi are wood-decay organisms that, unlike brown rot fungi, break down both cellulose and lignin — the two main structural components of wood. This complete degradation leaves wood bleached.

Yes — the White Rot Fungus is considered a high-risk pest. Structural failure in buildings and sudden tree failure in landscapes. Ganoderma root rot can cause catastrophic tree failure with little warning. Slower progression than brown rot but equally destructive long-term.

In Arizona, white rot funguss are most often encountered in the following situations: Bleached, whitish, or pale yellow wood with a stringy, fibrous texture. Wood feels spongy and wet. Colorful bracket fungi (turkey tail, shelf fungi) on wood surfaces or tree bases. Ganoderma conks at base of trees. Wood that pulls apart in long fibers.

The White Rot Fungus is most active during: Year-round wherever persistent moisture is present. Arizona's warm desert climate can extend activity periods compared to other states, so year-round vigilance is recommended in the Phoenix metro and surrounding areas.

Control moisture sources. Avoid wounding tree roots and trunks. Do not bury wood debris near trees. Use pressure-treated wood in ground contact. Inspect trees regularly for basal conks.

Eliminate moisture source. Remove and replace decayed structural wood. Trees with Ganoderma root rot should be evaluated by a certified arborist — removal is often necessary to prevent sudden failure. Borate preservatives for adjacent sound wood.

Most standard homeowner's insurance policies exclude damage caused by fungi, rot, and gradual deterioration. Early detection and remediation are critical to limiting repair costs. Pest Control Bros can inspect for white rot fungus and recommend moisture control and treatment options before damage becomes extensive.