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The Daily Insight

What bugs infest pine trees?

Author

Daniel Foster

Published Jun 02, 2026

What bugs infest pine trees?

Pests of Live Trees

  • Pine sawyer beetles (Figure 4) are often reported on white and Scotch pine.
  • Zimmerman pine moths (Figure 5) are common pests of Austrian and Scotch pines and Norway spruce that can kill tree limbs and tree tops.
  • White pine weevils (Figure 6) are common pests of pines, Douglas-fir, and spruces.

How do I get rid of bugs in my pine tree?

We recommend first using a contact insecticide such as Sylo Insecticide to the tree trunk, limbs, and bark to kill any adult Bark Beetles on the tree. This is a pyrethroid that delivers a quick knockdown of insects on trees.

What kills longleaf pine trees?

Annosus root disease (ARD), caused by the fungus Heterobasidion annosum, produces significant losses of conifers across the South. On sandy, well-drained sites, this disease causes growth loss or kills trees. It is most often associated with thinning of loblolly, longleaf, shortleaf, slash, and white pine plantations.

What kind of insects are on pine trees?

Heavily infested trees may look like they’re covered in a fine dusting of snow or splattered with white paint. The scale insects are found mostly on the older needles on the inside of the tree. Unlike the oystershell and pine scales, the striped pine scale ( Toumeyella pini) is a soft scale.

What kind of disease can kill a pine tree?

Pines infected with canker diseases are also vulnerable to fungal diseases. Untreated canker diseases can spread, killing limbs or the entire tree. The best defense against canker diseases is to choose disease-resistant cultivars that are suited to your soil and climate.

What kind of bug eats pine needle needles?

Pine needle scales suck sap from the needles, causing localized discoloration and premature needle shed. Prolonged outbreaks can kill branches and young trees, stressing the tree and making it vulnerable to Ips and mountain pine beetle infestation.

Why are longleaf pine trees resistant to fire?

The longleaf pine’s resistance to fire may contribute to its longevity. The thick bark of an older tree makes it quite flame resilient, and long, tufted needles protect buds from fire even as the needles themselves burn. This tree’s growth cycle depends upon regular low-intensity fires.

What kind of bugs are on my pine tree?

If, on the other hand, the holes are scattered at random, then your tree is probably being attacked by bark beetles. These are mostly small, brown beetles that burrow under the bark and lay eggs.

What kind of insect is the southern pine beetle?

The southern pine beetle (SPB), Dendroctonus frontalis Zimmermann, is the most destructive insect pest of pine in the southern United States. A recent historical review estimated that SPB caused $900 million of damage to pine forests from 1960 through 1990 (Price et a1. 1992).

What kind of disease does a pine tree have?

Some of the more common include cankers, rusts, bark beetles and soft scales. If your pine tree develops an area of dead, sunken tissue on its stems or branches, it could be afflicted with a canker disease. Foliage on infected limbs can turn yellow or brown and wilt, while infected bark can become discolored and ooze resin.

How does a beetle get out of a pine tree?

Resin under pressure within the tree can successfully force out or pitch out beetles if there are only a few beetles and the tree is relatively healthy. Mass-attacking SPB deplete the resin production capabilities of the tree causing resin flow to cease, after which point the tree is easily overcome.