Which beetles
Polk County has two groups of pine bark beetles that matter. Ips engraver beetles — three species — attack the upper trunk, limbs and tops of pines that are already stressed: by drought, by lightning, by root damage from construction, by flooding, by a storm that racked them. They bore in, lay eggs in galleries under the bark, and the larvae girdle the tree. Black turpentine beetles work the lower trunk, from the ground up to about eight feet, and leave big pitch tubes the size of a quarter. The southern pine beetle, the one that wipes out whole stands in Georgia and north Florida, does not occur south of Orlando — so a Polk 'outbreak' is usually a few stressed trees, not a forest. But three stressed trees can be the three pines over your pool cage.
How to read a pine
- Pitch tubes. Small blobs of resin, white to reddish, on the bark — the tree's attempt to push the beetle out. Dime-sized high on the trunk and limbs: Ips. Quarter-sized at the base: black turpentine beetle. A few on a vigorous tree can be a win; dozens mean the beetles are winning.
- Frass. Reddish-brown boring dust in the bark crevices and at the base.
- Needle color — the rule. Green needles with pitch tubes: active attack, the tree is dying, and the next generation of beetles is developing inside. Remove now. Red or brown needles: the tree is dead; beetles may still be emerging. Remove now. Gray needles, bark falling off: the beetles are long gone; the tree is simply dead and will fall. Remove before the next storm, but the urgency is the fall, not the spread.
- Woodpecker activity. Fresh woodpecker holes all over a pine mean it's full of larvae.
Why your pine got hit
Ips beetles find stressed pines. In Lakeland the stress is usually one of four things: a lightning strike (Polk had more than a million strikes in 2025, and a struck pine is a beetle magnet within weeks); root damage from a new driveway, pool, septic drainfield or utility trench next door; drought on the deep, dry sand of the ridges; or storm damage — a racked trunk or a broken top. A healthy slash pine with intact roots pitches beetles out; a stressed one can't.
Can it be saved?
Rarely, and never once the needles have changed. A vigorous pine with a handful of fresh pitch tubes, in a drought, can sometimes be saved by deep watering through the stress period and removing the already-dead pines nearby that are producing beetles. Insecticide sprays on a tree that's already infested don't work — the beetles are under the bark — and preventive sprays on the whole trunk of a 70-foot pine are expensive, short-lived and rarely worth it for a yard tree. The honest answer for most beetle-hit pines is: remove the dead and dying ones quickly, and protect the healthy ones by not stressing them.
Protecting the pines you keep
- Water deeply during drought — once a week, slowly, out to the drip line.
- Don't trench, grade, pave or pile fill inside the drip line. If a neighbor's construction is doing it, water your pines through the job.
- Remove beetle-killed pines promptly so they don't seed the yard.
- Have lightning-struck pines assessed and watched for a season.
- Don't top pines or strip the lower limbs; a healthy crown is what keeps a pine vigorous.
Common questions
How fast does a beetle-hit pine die?
Weeks to a couple of months from the first pitch tubes to red needles in an Ips attack. By the time most people notice, it's done.
Will the beetles go to my other pines?
If those pines are stressed too, yes — Ips emerge and fly to the nearest weak pine. Healthy pines nearby usually pitch them out. Removing the infested tree quickly matters most.
My pine has red needles but the trunk looks fine. Do I really have to remove it?
Yes — red needles mean the tree is dead. A dead pine stands a year or two, drops limbs, and falls in a storm toward whatever's heaviest below it. If nothing's under it, you can leave it as a snag for the woodpeckers; over a house, it comes down.
Is this the southern pine beetle?
No — it doesn't occur south of Orlando. Polk's beetles are Ips engravers and black turpentine beetles, which take stressed trees one at a time rather than whole stands.
Does the city do anything about dead pines?
Only on public land. Private dead trees are the owner's; Plant City requires an arborist report for complaints about them, and most cities will cite a dead tree that threatens a neighbor.
Related: Dead pine removal · Lightning-struck trees · Crane tree removal · North Lakeland