Not all threats to your trees come with obvious symptoms. Some start small—tiny holes, a bit of sawdust, some leaf yellowing—and before long, you’ve lost a cherished oak, pine, or sycamore. Summer is peak season for bark beetles, invasive borers, and other pests that thrive in drought-stressed conditions. Knowing what to look for can mean the difference between prevention and loss.
Why Summer Is High Risk for Tree Pests
Heat and drought are ideal conditions for pest outbreaks. Trees under stress are:
- Less able to defend against boring insects
- More vulnerable to infestations that spread disease
- Slower to recover from early damage
Combine that with already dry wood and thin canopies, and your trees become easy targets.
Pests We’re Seeing Right Now
1. Bark Beetles (Red Turpentine, Western Pine)
- Attack pines weakened by drought
- Look for reddish boring dust at the base or trunk fissures
- Tunneling beneath bark disrupts nutrient flow and invites decay
2. Invasive Shot Hole Borer (ISHB)
- Affects dozens of species—especially sycamores, oaks, maples
- Carries Fusarium dieback, a lethal tree disease
- Signs: tiny entry holes, oozing sap, canopy dieback
3. Ambrosia Beetles
- Similar damage to ISHB, with white frass “toothpicks” sticking out of bark
- Common in weakened ornamentals and fruit trees
4. Leaf Miners, Aphids, and Thrips
- Damage canopies from the inside out: curled, spotted, or faded leaves
- Often ignored until trees start thinning or look scorched
Early Signs to Watch For
- Boring dust or sap bleeding down the trunk
- Tiny, round or oblong holes in bark
- Canopy thinning or sudden leaf drop
- Dieback starting at branch tips
- Sticky leaves, black sooty mold, or honeydew residue
- Dull, discolored, or distorted new growth
What You Can Do Right Now
✅ 1. Schedule a Pest Inspection
Our arborists are trained to detect signs most property owners miss. An early inspection can prevent irreversible decline.
✅ 2. Remove Infested or Dead Branches
Dead wood is a magnet for beetles—especially in pines, olives, and citrus. Targeted pruning helps slow infestations.
✅ 3. Support Tree Hydration
Healthy trees are more resistant to pests. Hydration, mulching, and soil management are your first line of defense.
✅ 4. Use Targeted Treatment (When Needed)
In some cases, we may recommend trunk injections, systemic insecticides, or PHC programs to treat infestations.
Expert Insight:
Even if your trees look fine, some infestations don’t show symptoms until it’s too late. ISHB and bark beetles often attack internally first. A professional inspection is the only way to catch them early.
Don’t Let Summer Pests Catch You Off Guard
By the time bark beetles or borers show visible damage, your options may be limited. The sooner we inspect, the more we can save.
📞 Call Urban Tree Management at (669) 639-0521 to book a pest and health inspection!
