Sudden Oak Death in Central Texas? Get a Forester On-Site Fast

Symptoms

Groups of oaks dying within weeks in the Kosse, TX area, with bore holes under bark but no visible borers.

Likely Culprit: Oak Wilt

This fungal disease (Bretziella fagacearum) spreads rapidly through root grafts and beetle vectors, killing red oaks in weeks and live oaks in months. The bore holes may be secondary ambrosia beetles attacking stressed trees.

Immediate Steps

1. Contact Texas A&M Forest Service – Their Pest Management division (Joe Pase, contact page) can diagnose and prescribe treatment.
2. Do not prune oaks February–June (nitidulid beetle activity spreads the fungus).
3. Trenching may be needed to break root grafts between infected and healthy trees.

Why Professional Diagnosis Matters

Oak wilt mimics other issues (drought, construction damage, other pathogens). Only lab confirmation or a trained forester can distinguish it. Treatment (propiconazole injections) is costly and only effective on high-value, early-stage trees.