As winter begins to loosen its grip across Bucks and Montgomery Counties in Pennsylvania and Mercer and Hunterdon Counties in New Jersey, many homeowners start noticing something concerning — brown, dry patches on their evergreens.
Is it a disease? Insects? Or something worse?
In many cases, it’s winter burn — one of the most common types of winter tree damage in our region. The good news is that identifying it early can make a big difference in how well your trees recover this spring.
What Is Winter Burn?
Winter burn is a form of moisture stress that affects evergreen trees and shrubs during the colder months. It happens when foliage loses water faster than roots can replace it — typically because the ground is frozen.
Unlike fungal diseases, winter burn on trees is not caused by a pathogen. It’s an environmental injury.
Trees and Shrubs Most Commonly Affected
In PA and NJ, we frequently see evergreen winter burn on:
- Arborvitae
- Boxwood
- Holly
- Rhododendron
- Newly planted evergreen trees
Damage is often more noticeable on south- and west-facing sides where winter sun and wind exposure are strongest.
5 Signs of Winter Tree Damage to Look For
If you’re inspecting your property in late February or early March, watch for these signs of winter tree damage:
- Brown or bronze foliage on outer tips
- Damage concentrated on one side of the tree
- Crispy, dry needles or leaves
- Severe browning on newly planted trees
- Bark splitting on thin-barked trees (sunscald)
It’s important not to confuse winter burn with normal interior needle drop, which occurs naturally as evergreens shed older growth.
Why Winter Burn Is So Common in PA and NJ
Homeowners in Bucks, Montgomery, Mercer, and Hunterdon Counties experience several conditions that increase the risk of winter tree damage:
- Freeze-thaw temperature swings
- Cold, drying winter winds
- Bright winter sun reflecting off snow
- Fall drought before soil freezes
- Compacted or poorly draining soil
When soil freezes, roots cannot absorb water. Meanwhile, evergreen needles continue to lose moisture. The result is winter burn.
Trees that entered winter already stressed by drought, construction activity, or insect pressure are more vulnerable.
Can Trees Recover From Winter Burn?
In many cases, yes.
Mild Winter Burn
Light browning often improves as new spring growth fills in damaged areas.
Moderate to Severe Winter Tree Damage
More significant damage may require:
- Selective pruning of dead tissue
- Monitoring for secondary insect or disease issues
- Soil treatments to strengthen the root system
Deep Root Fertilization improves soil biology and delivers nutrients directly to the root zone, helping stressed trees recover more efficiently.
Tree Balance applications can improve winterburn resilience over time by redirecting energy into root development
When to Call a Professional for Winter Tree Damage
You should schedule a professional tree inspection if:
- More than 30% of the canopy is affected
- Bark cracking or trunk splitting is present
- Damage worsens year after year
- The tree was planted within the last 2–3 years
- The tree is already stressed by insects or disease
Improper pruning before spring growth begins can worsen tree stress. A professional evaluation ensures the right corrective steps are taken at the right time.
Pro Tip: Prevent Winter Burn Before It Starts
One of the best ways to reduce evergreen winter burn is deep watering in late fall before the ground freezes. Hydrated root systems are better prepared to handle winter moisture loss.
Healthy soil also plays a major role in winter resilience.
Schedule a Winter Tree Health Assessment Before Spring
Late winter is the ideal time to evaluate winter tree damage before active growth begins. Addressing stress early with plant health care helps trees recover stronger and fuller during the growing season.
If you’re seeing browning or unusual stress on your evergreens, don’t wait for spring to make it worse. Ready for a free, no-pressure estimate? Call us today at 267-589-1231 or contact us online.
Since 1983, Willow Tree and Landscaping Service has delivered professional, safety-focused tree care and landscaping across Bucks, Montgomery, Mercer, and Hunterdon Counties. Our certified team pairs expertise with personal service to keep your property beautiful and safe.