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Oak Wilt: Protecting Our 
Preserve Oaks 
BCCP Infrastructure 
Working Group 
Eric Beckers 
Staff Forester 
Texas A&M Forest Service 
Austin, TX
What is Oak Wilt? 
Oak Wilt is a disease caused by a fungus called Ceratocystis fagacearum. 
This fungus causes a clogging of the water conducting vessels of infected oak trees, causing the trees to wilt and die.
How Does Oak Wilt Spread? 
The Oak Wilt Fungus Can be Spread 
In Two Primary Ways: 
Underground 
Through grafted or joined root systems 
Above Ground 
Insects carry fungal spores from infected red oaks to fresh wounds on healthy oaks
Disease Transmission 
Root Grafts (95%) 
Insect Vectors (5%)
Blackjack 
Spanish 
Shumard 
The Red Oaks
OPEN WOUNDS VULNERABLE TO OAK WILT
Oak Wilt
OAK WILT TRENCHING 
Expen$ive 
Disruptive 
Not 100%
Oak Wilt was officially identified in Dallas in 1961. 
Since that date, the fungus has been identified in 76 counties.
Symptoms 
Veinal necrosis is an important symptom of the disease in Live Oaks.
Preventative Measures 
Avoid wounds 
Paint wounds 
Sanitize tools 
Destroy diseased red oaks
AVOID WOUNDING OAKS 
FROM 
FEBRUARY THROUGH JUNE 
(BCCP PRUNING – 9/1-3/1) 
MAKE PROPER PRUNING CUTS
_
STUMP CUT IS ONE OF LARGEST WOUNDS
PAINT ALL WOUNDS ON OAKS!
Sanitize Tools
Infected Red Oaks should be destroyed immediately by Burning, Burying, or Chipping/Composting. 
This practice will help reduce the potential ABOVE GROUND spread where the fungal spores are transported to healthy trees by insects.
Oak Wilt Information Partnership 
texasoakwilt.org 
tfsweb.tamu.edu 
Protect Our Oaks!

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BCP Infrastructure Oak Wilt Concerns

  • 1. Oak Wilt: Protecting Our Preserve Oaks BCCP Infrastructure Working Group Eric Beckers Staff Forester Texas A&M Forest Service Austin, TX
  • 2.
  • 3.
  • 4.
  • 5. What is Oak Wilt? Oak Wilt is a disease caused by a fungus called Ceratocystis fagacearum. This fungus causes a clogging of the water conducting vessels of infected oak trees, causing the trees to wilt and die.
  • 6. How Does Oak Wilt Spread? The Oak Wilt Fungus Can be Spread In Two Primary Ways: Underground Through grafted or joined root systems Above Ground Insects carry fungal spores from infected red oaks to fresh wounds on healthy oaks
  • 7. Disease Transmission Root Grafts (95%) Insect Vectors (5%)
  • 9.
  • 10. OPEN WOUNDS VULNERABLE TO OAK WILT
  • 12. OAK WILT TRENCHING Expen$ive Disruptive Not 100%
  • 13.
  • 14. Oak Wilt was officially identified in Dallas in 1961. Since that date, the fungus has been identified in 76 counties.
  • 15.
  • 16.
  • 17.
  • 18. Symptoms Veinal necrosis is an important symptom of the disease in Live Oaks.
  • 19.
  • 20.
  • 21. Preventative Measures Avoid wounds Paint wounds Sanitize tools Destroy diseased red oaks
  • 22. AVOID WOUNDING OAKS FROM FEBRUARY THROUGH JUNE (BCCP PRUNING – 9/1-3/1) MAKE PROPER PRUNING CUTS
  • 23. _
  • 24.
  • 25.
  • 26.
  • 27. STUMP CUT IS ONE OF LARGEST WOUNDS
  • 28. PAINT ALL WOUNDS ON OAKS!
  • 29.
  • 31. Infected Red Oaks should be destroyed immediately by Burning, Burying, or Chipping/Composting. This practice will help reduce the potential ABOVE GROUND spread where the fungal spores are transported to healthy trees by insects.
  • 32.
  • 33. Oak Wilt Information Partnership texasoakwilt.org tfsweb.tamu.edu Protect Our Oaks!