Oak Wilt Information
For more information contact LCNA Oak Wilt Committee Chair
Jennifer Lamm Please contact by email, not phone.
Current disease centers in Lost Creek — as designated by Texas Forestry Service
- Lost Cove/Mauna Kea/Cypress Point West/Huckleberry Cove
- Wilson Heights/Thaddeus Cv
- Diamond Head
- Lost Creek Blvd close to entrance
Oak wilt disease centers are in red on map:
What you can do
- Prune trees properly
- Prune only in the hottest summer months of July/August.
- Seal all pruning cuts immediately and insist on watching tree trimmers do this.
- Pruning seal or latex spray paint works well.
- Sanitize all trimming equipment BEFORE starting work and insist on watching tree trimmers do this.
Lysol disinfectant is an effective sanitizer
- Red Oak infection
- Contact Texas forestry ASAP and remove tree properly.
- Live Oak infestation
- Do it yourself treatment
- Arborist treatment
- Plant Oak wilt resistant trees.
- Educate neighbors on all of the above
Signs of oak wilt
If you suspect oak wilt contact a certified arborist. http://www.texasoakwilt.org/Vendors/vendor.php
Red Oaks — note that stems are no longer green on these
Wilting leaves turn pale green or brown over entire tree.
There is a state cost share program for removal of oak wilt
diseased red oaks.
Live oaks — veinal necrosis — yellowing or darkening of the
veins of the leaves.
Tree will tend to thin in the crown (top) first.
Oak wilt fungus affects primarily
- Red oaks
- Red (Texas)
- Black Jack
- Live oaks
White oaks are not as drastically affected.
Oak wilt spreads through
- Root transmission
- Roots grafted together or that were interconnected from inception.
- Rate of spread through the roots is 50-100 ft per year.
- Open (unsealed) wounds and cuts
- Nitidulid beetle attracted to open wounds transmits fungus.
- Contagious Fungal mats (only on red oaks).
- Human transfer
- Improperly sanitized tree trimming equipment.
Treatment of infected trees
- Alamo (or generic) fungicide through Macro infusion. http://www.texasoakwilt.org/Professionals/Injection/injection.html
- More effective on live oaks than red oaks.
- Fungicide treatment is not a cure and does not stop spread.
- Fungicide treatment helps the treated tree fight the fungus and survive.
- Fungicide is not 100% effective.
- Timing of treatment is important.
- Once tree is showing signs of infection, treatment less successful.
- Treat when trees are within 100-200 ft of infected ones.
- Communicate with neighbors when you treat.
- Fungus continues to spread through roots at 50-100ft/year.
- Trenching a loop of containment 100ft outside of infected trees.
- Most effective if done properly.
For More Information See Texas Oak Wilt Partnership Site
Trees are good http://www.treesaregood.com/
(recommended by Eric Beckers)
Eric Beckers, Texas Forest Service