Reading pine beetle damage on a Houston pine, and knowing when to let it go

Pitch tubes, boring dust and a fading crown: what to look for

Texas A&M Forest Service describes Ips engraver beetle attacks on drought-weakened pines as white to reddish-brown pitch tubes about the size of a wad of gum. Each tube marks a spot where a beetle bored in and the tree pushed resin out to stop it. One tube on its own tells you little. What matters is how many there are, how high they run, and what the crown is doing.

Binoculars help on tall loblollies, because the upper trunk is out of easy view from the patio.

• Pitch tubes scattered on the bark, sometimes well up the trunk
• Reddish boring dust in bark crevices and at the base
• Needles fading from green to yellow, then red-brown
• Woodpeckers flaking off bark to reach larvae underneath
• Small round exit holes in the bark of a browning pine

Why north Houston pines are open to beetles now

Bark beetles mostly finish trees that something else weakened. After three straight years of hard freezes and drought, Texas A&M Forest Service warned in 2024 that East Texas trees were open to Ips beetles and hypoxylon canker. CenterPoint saw the same stress during Beryl, describing trees weakened by freezes, drought and heavy spring rain.

The Woodlands lost about 7,000 trees to Beryl, beetle infestations and other weather. Around Spring, Conroe and The Woodlands, the pines to watch hardest are the ones with a recent injury: a lightning strike, roots cut by a new driveway or pool, fill soil piled over the root zone, or a top cracked in a storm.

Ips beetle or southern pine beetle? Watch the trend first

Texas A&M Forest Service publishes guidance on both Ips engraver beetles and southern pine beetle, and AgriLife Extension has its own pine bark beetle publication. Telling the species apart takes a look under the bark at the galleries the adults carve. Your county Extension office is the place to ask about identifying a sample.

For a homeowner, the decision rarely waits on the species name. What matters is whether the attack is moving: new pitch tubes that were not there last week, a second pine showing tubes, or a crown changing color. Any of those means the beetles are winning on that tree.

Can this pine be saved? A quick field triage

This is a field sorting, not a diagnosis. A pine beetle inspection puts eyes on the whole trunk and on the pines around it, which is where the real decision gets made.

Salvage, spraying and the pines next door

Texas A&M Forest Service calls salvage cutting the most practical control, and says high-value trees can be sprayed. Salvage means taking infested pines down promptly instead of waiting to see what happens, so the trees still standing have better odds. That is the logic behind removing infested pines early.

Spraying fits a narrow case: a valuable pine near the house, still green, with attacks close by. It is about protecting a tree the beetles have not overwhelmed. A pine with a fading crown is past that point, and spraying it only adds cost.

If oaks in the same yard show bark peeling away over dusty, discolored patches, that is a different problem, possibly hypoxylon canker. It gets its own tree disease care plan.

Found pitch tubes this week? Five calm first steps

Pitch tubes found early leave you options. Found late, they mostly leave you a removal date. These steps keep the choice open while you line up a closer look.

• Photograph the tubes with a coin for scale, and note the date.
• Check every pine within reach of the house for the same signs.
• In a dry spell, give stressed pines a slow, deep soak across the root zone.
• Keep trenching, parked vehicles and fill soil off pine roots.
• Book the inspection before the crown changes color, not after.

A dead pine over the roof only gets harder to remove

A beetle-killed pine dries out and turns brittle, and the clock works against you. Early on, a climber can still tie in and lower the top in sections on a rope. Later, dead limbs snap under rigging loads and the stem itself can be too weak to climb. That is when a crane removal becomes the safe method, and the price follows.

In The Woodlands, remember the paperwork. The covenants require an application before removing a living tree larger than six inches in diameter, and a beetle-hit pine with green needles may still count. Our guide to The Woodlands permit steps covers how to ask.