Oak wilt is one of the most destructive tree diseases in North America — and it spreads fastest in spring, exactly when most homeowners feel safest pruning their oaks. Fresh cuts are the primary entry point, and the beetles that carry the fungus are most active right now.
The first symptom — leaf browning from the outer canopy inward — typically appears 4 to 6 weeks after infection. By then, the disease is already established in the vascular system and the window for intervention is narrow. Prevention is the only reliable strategy.
If you have white oaks, Oregon white oaks, or any Quercus species on your property, now is the time to schedule an inspection. Our arborists will assess your trees’ current health, identify any pre-existing stress points, and advise on pruning timing and wound treatment to keep your oaks protected through peak season.