Beetle activity in Central Texas rises through the spring, which changes what an open oak cut costs. Here is why, and what it means for work on your property.
Related: Oak tree trimming in Wimberley and the Hill Country.
Why spring is the risky time
Oak wilt spreads primarily through beetles drawn to fresh pruning wounds. Through spring those insects are far more active and can carry the fungus from an infected tree to a healthy one. Once an oak is infected the disease moves through connected root systems and can take out a whole stand. That is why the cut matters more than the calendar. An oak wound sealed on the spot is not an opening a beetle can use.
When beetles are most active
Beetle activity in Central Texas peaks through the spring. That raises the cost of leaving a fresh oak cut open, which is why every cut we make on an oak is painted immediately rather than at the end of the day.
Planning oak work
If you have oaks near the house, the driveway or outbuildings, book the assessment early. The calendar fills quickly once spring arrives, and knowing what a tree needs before it becomes urgent is worth more than the trimming itself.
If you are not sure how urgent it is
Storm damage, fallen limbs and immediate hazards get handled whenever they happen, and every cut gets sealed straight away. Routine work is handled the same way. If you are unsure what you are looking at, call and describe it.
These precautions matter beyond your property, because live oaks share roots across property lines. See oak tree trimming.
What the precautions protect against
Oak wilt has killed millions of oaks in Texas. The fungus is highly destructive and spreads quickly through interconnected oak roots, which is why one unsealed cut is not just your problem. Live oaks fuse roots with their neighbors, so an infection can move outward across property lines at 75 to 100 feet per year.
Sap-feeding beetles active in spring are what carry it above ground. Nitidulid beetles are drawn to freshly cut oak sap, and they can travel over a mile with spores on them. An unsealed pruning wound in April is an open invitation at exactly the wrong moment.
The three rules, in order of importance
Paint oak cuts promptly. Latex paint or a wound dressing, within minutes rather than at the end of the day. This applies year round, and it applies to accidental bark damage from a mower or a vehicle.
Sanitize tools between trees. Disinfected tools and timely wound sealing are the two operational practices that matter most and the two most often skipped.
Do not leave cut oak stacked. Oak wood from a tree that died suddenly can produce the fungal mats that start new infections. Chip it or have it removed properly.
How much to take
Prune no more than 25% of the canopy in a year, and less on a tree already under drought stress. Avoid removing branches larger than four to six inches in diameter where you have the choice, because wounds that size close slowly on a mature oak. Cut just outside the branch collar so the wound can seal.
What still counts as an emergency
Emergency pruning can occur at any time of year for hazardous or storm-damaged limbs, provided the wounds are sealed straight away. A cracked limb over a bedroom does not wait. The precautions exist to prevent avoidable infection, not to leave you with a dangerous tree.
If you are unsure which category you are in, send a photograph. That is usually enough to tell.
Want your oaks looked at?
Book the assessment now and we will schedule the work for when it is right for the tree.