Common Tree Pests & Diseases in Buncombe and Henderson Counties — And How to Protect Your Trees
As temperatures rise across Asheville and the surrounding region, insects and tree diseases become more active. Late spring and early summer are peak times for pests to emerge, spread, and begin damaging trees throughout Western North Carolina.
Understanding what to look for — and when to act — can make the difference between saving a tree and losing it.
Why Western North Carolina Trees Are Vulnerable
Our region’s warm, humid climate creates ideal conditions for pests and fungal diseases. Combined with dense forests and residential tree canopies, problems can spread quickly if left untreated.
Early identification is key.
Most Common Tree Pests in the Asheville Area
Emerald Ash Borer
This invasive beetle continues to threaten ash trees throughout Buncombe and Henderson counties.
Signs include:
Thinning canopy
D-shaped exit holes in bark
Increased woodpecker activity
Early treatment can save affected trees.
Hemlock Woolly Adelgid
Hemlocks are iconic in Western North Carolina, but this pest has devastated populations.
Watch for:
White, cotton-like masses on branches
Needle loss and branch dieback
Professional treatment is essential to preserve these trees.
Scale Insects & Aphids
These pests weaken trees by feeding on sap.
Symptoms include:
Sticky residue on leaves or surfaces below
Yellowing foliage
Sooty mold growth
Common Tree Diseases in Buncombe & Henderson Counties
Root Rot
Often caused by poor drainage and compacted soil.
Signs include:
Declining canopy
Mushrooms near the base
Tree instability
Fungal Leaf Diseases
High humidity encourages fungal growth, especially in spring.
While many leaf diseases are cosmetic, some can weaken trees over time if recurring.
Prevention Is the Best Defense
Healthy trees are far more resistant to pests and disease.
Proactive Steps:
Proper pruning
Soil health management
Mulching and watering
Regular inspections by a certified arborist
Targeted treatments are far more effective than reactive solutions once damage is severe.
When Professional Treatment Is Necessary
DIY solutions often fail to address the root cause of pest and disease problems. A certified arborist can accurately diagnose issues and recommend safe, effective treatments that protect both trees and surrounding plants.
Protect Your Trees This Season
Late spring and early summer are critical times for pest activity. If you suspect an issue or want a professional assessment, Family Tree Care is here to help.
Schedule a tree health inspection today to keep your landscape thriving all season long.
