Why Are My Evergreens Turning Brown? Causes & Fixes
Published On: Oct 6, 2026
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Few things make a gardener nervous faster than noticing brown needles on an evergreen that was perfectly green a few weeks earlier.
Maybe the inside of your Thuja Green Giant Arborvitae suddenly looks rusty brown. Perhaps your Leyland Cypress has brown tips after a hot summer. You might notice yellow needles on a White Pine, bronzing on an Arborvitae during winter, or browning on one side of a Juniper.
The natural reaction is usually the same: "Is my evergreen dying?"
Most of the time, I don't start by thinking about disease. I start by asking what the plant has experienced. Has the weather been unusually hot or dry? Was the tree planted recently? Is the root ball too wet or too dry? Did the browning appear after winter? Is the brown foliage only on the inside of the tree?
Those clues often tell us much more than the brown color itself.
Quick Visual Diagnosis: What Does the Browning Pattern Tell You?
Before assuming something serious is wrong, look closely at where the brown foliage is occurring. The pattern can often point you in the right direction.
| What You See | What It Often Means | What to Check |
|---|---|---|
| Brown or yellow foliage inside the plant in fall, while the outer tips remain green | Normal seasonal needle drop | Check whether the newest outer growth is healthy |
| Older White Pine needles turning yellow or brown while branch tips stay green | Normal fall shedding | Look at the newest needles before becoming concerned |
| Brown tips after a hot, dry summer | Heat or drought stress | Check the moisture inside the original root ball |
| Browning mainly on one side after winter | Winter burn or drying wind | Look at exposure to winter sun and wind |
| Browning beside a road, driveway, or sidewalk | Possible salt injury | Look for salt spray, runoff, or piled snow |
| Yellowing or browning in soil that remains constantly wet | Root stress from excess moisture | Check drainage before adding more water |
| Browning on a recently planted evergreen | Establishment stress or inconsistent moisture | Check the original root ball, not only the surrounding soil |
| Brown interior foliage suddenly becomes visible after snow or heavy pruning | Older shaded foliage has been exposed | Check whether the remaining outer growth is healthy |
| New growth or entire branches progressively dying | A more serious problem may be developing | Check cultural conditions first, then investigate pests or disease |
My simplest rule is this: if the inner foliage is browning but the outer growing tips remain healthy and green, I usually think first of normal seasonal shedding. If the tips and entire branches are browning, I start investigating more closely.
Normal Seasonal Shedding: Evergreen Doesn't Mean Every Needle Stays Forever
Why Evergreens Often Brown in Fall
Evergreens keep foliage throughout the year, but they don't keep every individual needle forever. Older foliage eventually ages, changes color, and falls while newer growth remains. On many evergreens, those older needles are located toward the inside of the plant, closer to the trunk.
During September and October, many evergreens naturally begin shedding that older foliage. That's why White Pine, Green Giant Arborvitae, Emerald Green Arborvitae, and other conifers can suddenly develop yellow, bronze, rust-colored, or brown interior foliage during fall.
It can look dramatic, but if the newer growth remains healthy, the tree may simply be replacing old foliage. That's the evergreen version of fall leaf drop.
Green Giant Arborvitae Can Brown on the Inside
This is one of the questions we hear most often.
A homeowner looks inside a Green Giant Arborvitae and sees brown foliage near the trunk while the outside remains green. In many cases, that's perfectly normal.
As the tree becomes denser, the outer foliage shades older interior growth. Eventually, the plant lets some of that older foliage go. The same thing can happen with Emerald Green Arborvitae, American Pillar Arborvitae, and other Arborvitae. Our Green Giant Arborvitae guide covers what else to expect as these trees mature.
Brown foliage on the inside tells a very different story from brown foliage at the growing tips.
White Pines Can Look Worse Than They Really Are
White Pine is another evergreen that can make gardeners nervous in the fall. Older needles often turn yellow before dropping, and many can change color at the same time. University of Maryland Extension describes this needle yellowing as a normal fall color change that comes before needle drop.
If the younger needles toward the branch tips remain green and healthy while older needles farther back are turning yellow or brown, I'm usually much less concerned.
The tree isn't necessarily declining. It's renewing its foliage.
A Stressful Summer Can Make Browning More Noticeable
Seasonal needle drop can be heavier after a hot or dry summer.
Plants balance the amount of foliage they maintain with the amount of water their roots can supply. During drought or extended heat, older foliage may be shed sooner. This is especially noticeable on recently planted evergreens because their roots haven't yet expanded far beyond the original nursery root ball.
If fall browning seems heavier than usual after a difficult summer, think about what the plant experienced before assuming the tree is dying.
Water, Roots, and Planting
Newly Planted Evergreens Need Time
A newly planted evergreen may look substantial above ground, but below ground, it's still becoming established.
Most of the root system remains concentrated inside the original root ball. Until those roots grow into the surrounding soil, the tree is more sensitive to drought, heat, wind, and changes in moisture. That's why recently planted Green Giant Arborvitae, Leyland Cypress, Blue Ice Cypress, Emerald Green Arborvitae, Pines, Spruces, and Junipers can show some stress during their first season.
The first year is really about roots.
Check the Root Ball, Not Just the Surrounding Soil
The mulch may look wet, and the surrounding soil may feel moist, but the original root ball can still be dry. Container-grown plants often grow in a bark-heavy nursery mix that can dry differently from native soil.
During the first growing season, check the moisture inside the root ball itself. That's where most of the roots still are.
Water Deeply, Then Check Again
I would much rather see a newly planted evergreen watered thoroughly and then monitored than lightly sprinkled every evening.
Deep watering moistens the entire root zone and encourages roots to expand outward and downward. Shallow watering may never reach the deeper root system.
But don't water automatically. A tree planted during cool October weather doesn't use water at the same rate as a tree during ninety-degree July heat. Check the soil first. Our guide to preventing transplant shock covers watering new plants in more detail.
Too Much Water Can Cause Browning Too
A dry evergreen may turn yellow or brown. An evergreen sitting in saturated soil may do the same thing.
Roots need moisture, but they also need oxygen. If soil remains wet for long periods, root function begins to suffer. That's why more water isn't always the answer.
If the planting area stays wet after every rain or the irrigation system runs constantly, check drainage before reaching for the hose again.
Drainage Matters From the Beginning
Some evergreen problems start below ground long before brown foliage becomes visible.
Junipers, Pines, Blue Ice Cypress, and Carolina Sapphire Cypress generally perform best where excess water can drain away. Before planting, watch the area for a while after a heavy rain. If water sits there for long periods, choose a plant suited to wetter conditions or improve the drainage.
Right plant, right place begins with the roots.
Don't Plant Evergreens Too Deeply
Planting too deeply can create problems years later.
When planting an evergreen, I want the top of the root ball level with or slightly above the surrounding soil. I also want the trunk to widen naturally near the soil line rather than disappearing straight into the ground.
Planting deeper doesn't make a tree more secure. It can make it harder for the upper roots to receive the oxygen they need.
Use Mulch Correctly
A proper mulch layer helps conserve moisture, moderate soil temperature, suppress weeds, and protect the roots. But more isn't better.
Two to three inches spread over the root zone is usually far more useful than a deep pile against the trunk. Keep mulch away from the base of the tree.
Think wide, not deep.
Heat, Wind, and Winter
Heat and Wind Can Dry Evergreens Quickly
Evergreens lose water through their foliage year-round, and hot weather increases that loss. Wind can make it happen even faster.
That's particularly important for privacy trees because Green Giants, Leyland Cypress, Arborvitae, and other screening trees are often planted along exposed property lines, open fields, or hilltops. Reflected heat from driveways, walls, patios, and stone can also create hotter conditions than you might expect.
Newly planted evergreens are especially vulnerable because their root systems are still small.
Winter Burn Can Turn Needles Brown
Evergreens still have foliage during winter, which means they continue losing moisture. On sunny or windy winter days, that moisture loss can become significant. If the ground is frozen, the roots may not be able to replace the water quickly enough.
That's when winter burn can occur. Arborvitae, Junipers, Pines, Cryptomeria, and other evergreens may develop bronze, reddish-brown, or brown foliage, particularly on the side exposed to wind or winter sun.
Don't let evergreens enter winter bone dry. If fall has been dry, make sure the root zone has adequate moisture before winter. This is especially important for recently planted trees because their root systems haven't spread very far yet. A well-hydrated plant is better prepared to handle winter wind and sun.
Some Winter Bronzing Is Normal
Not every winter color change is permanent damage.
Certain Arborvitae, Junipers, Eastern Red Cedar, and Cryptomeria can develop bronze, olive, purple, or brownish tones in cold weather. Then spring arrives, and much of the normal color returns.
That's why I don't like declaring an evergreen dead in January based on color alone. Give it time to show you how it responds as temperatures warm.
Road Salt Can Cause One-Sided Browning
Evergreens growing near roads, sidewalks, and driveways may be exposed to deicing salts. Salt can reach the plant through spray, runoff, or piles of salty snow around the roots.
If the side of an Arborvitae, Juniper, or Pine facing the roadway is brown while the protected side looks better, road salt should be part of the investigation. Because salt spray and shoveled snow land low, the lower branches often show it first.
The location of the damage can tell you a lot.
Snow and Ice Can Expose Brown Interior Foliage
Heavy snow can spread upright branches apart and expose older brown foliage that was hidden inside the tree. Sometimes homeowners think the plant suddenly browned after a storm, when the snow simply made the interior easier to see.
If the branches aren't broken, many flexible evergreens gradually recover their shape.
Spacing, Pruning, and New Arrivals
Give Privacy Trees Enough Space
Privacy trees are often planted too closely because homeowners want immediate screening. The problem comes later.
As Green Giants, Leyland Cypress, Arborvitae, and Junipers mature, overcrowded trees compete for water, light, nutrients, and root space. Foliage between the trees may thin or brown as less sunlight reaches it, and the shaded lower branches are usually the first to go.
Spacing should be based on the mature size of the plant, not the size of the nursery pot. Our Arborvitae planting guide includes spacing for the most popular varieties.
A little patience now usually creates a healthier privacy screen later.
Heavy Pruning Can Reveal Brown Wood
An Arborvitae or Juniper may look green from the outside because that's where the sunlight reaches. If it's suddenly cut back hard, the old shaded interior may be exposed. That wood may be brown and may not readily produce new foliage.
That's why I prefer light, regular shaping rather than waiting until an evergreen has dramatically outgrown its space and then cutting it back severely.
Choose a plant whose natural mature size fits the location.
Recently Shipped Evergreens May Need a Little Time
An evergreen that's traveled in a box may look slightly different when it first arrives. Branches can be compressed, older interior foliage may become visible, and some loose needles may fall during unpacking.
Give the plant some time to relax. Plant it correctly, water the root ball thoroughly, and allow the branches to return to their natural position.
Don't judge the plant's long-term health five minutes after opening the box. If your evergreen arrived in fall, our guide to what to expect when your plant arrives in fall explains why its growth slows down this time of year.
Don't Fertilize Brown Needles Back to Green
Brown needles won't turn green again because fertilizer was applied.
If the tree is dry, correct the watering. If the soil stays saturated, address drainage. If winter burn damaged the foliage, give the tree time to produce new growth.
Fertilizer is useful when there's a nutritional need. It isn't a cure for every stressed evergreen.
When Should You Be Concerned?
I'm less concerned when older interior foliage browns during fall while the outer growth remains healthy.
I'm more concerned when the newest foliage is browning, entire branches continue to die, the tree is rapidly thinning, or the decline persists after watering, drainage, planting depth, and environmental stress have been checked.
That's when it makes sense to investigate pests or diseases. But I wouldn't start there. Start with the growing conditions first.
Pests and Diseases Worth Ruling Out
Once the growing conditions check out, these are the usual suspects on the evergreens in this article:
- Canker diseases on Leyland Cypress. Scattered side branches fade, then turn reddish brown, often with dark, cracked lesions on the bark. University of Maryland Extension notes these fungi cause disease when trees are stressed, especially by drought, and that fungicides aren't effective. Prune affected branches well below the canker and keep the tree watered during dry spells.
- Bagworms. Look for small, tough bags made of needles and twigs hanging from the branches. Arborvitae, cedar, juniper, spruce, and pine are the most frequently damaged hosts. Pick off the bags and put them in the trash before the new generation hatches in late spring.
- Spruce spider mites. Tiny yellow stippling on the needles that turns yellow, then brown. Unlike most mites, these are most active in the cool weather of spring and fall, and they favor spruce, pine, hemlock, and arborvitae. Tap a branch over a sheet of white paper and look for tiny dark specks that move.
- Root rot. In soil that stays wet, roots can decline and rot. If the browning started after a wet stretch or in a low spot, go back to the drainage section before treating the foliage.
If you still can't tell what's going on, your local extension office can help with an identification before you spend money on a treatment.
How to Keep Evergreens Healthy
The best defense against unnecessary browning is good planting and good aftercare.
Choose an evergreen whose mature size fits the site. Plant it at the correct depth. Make sure the soil drains well. Water the root ball carefully while the tree establishes itself and during extended drought.
Keep the root zone mulched, but keep mulch away from the trunk. Give privacy trees enough room to mature and avoid severe pruning into old bare wood.
Most importantly, learn what your evergreen normally looks like. That makes it much easier to recognize when something truly isn't normal.
Woodie's Take
When somebody tells me their evergreen is turning brown, the first thing I usually ask is, "Where is it brown?"
If a Green Giant Arborvitae has brown foliage deep inside the plant in October, but the outside is green and healthy, I'm probably thinking about normal seasonal foliage drop.
If a White Pine has yellow older needles in fall but healthy green tips, I'm thinking the same thing.
If a newly planted Leyland Cypress develops brown tips after a hot, dry summer, I'm checking the root ball.
If an Emerald Green Arborvitae is brown on the side facing the winter wind or a salted driveway, I'm thinking about what happened during winter.
That's how I like to approach evergreen browning.
Start with the season, weather, water, roots, and planting conditions before assuming something serious is happening.
Evergreens respond to heat, drought, cold, wind, snow, salt, transplanting, pruning, and normal seasonal change.
And yes, they shed old foliage.
Sometimes the brown needles that look the most alarming are simply older foliage making way for new growth.
So don't assume brown means dead, and don't automatically assume disease.
Before you treat the plant, figure out what the plant has been through.
Most of the time, that's where the answer begins.
Brown Evergreens: Your Questions, Answered
Why are my evergreen needles turning brown?
Start by looking at where the browning is. Brown or yellow foliage on the inside of the plant in fall, with healthy green tips, is usually normal seasonal needle drop. Brown tips after a hot, dry summer point to heat or drought stress, browning on one side after winter points to winter burn or road salt, and browning in soil that stays wet points to root stress. Check the growing conditions before assuming pests or disease.
Is it normal for arborvitae to turn brown on the inside?
Often, yes. As Green Giant, Emerald Green, and other Arborvitae become denser, the outer foliage shades older interior growth, and the plant lets some of that older foliage go, usually in September and October. If the outer growing tips stay green and healthy, brown foliage near the trunk is usually normal seasonal shedding.
Why is my arborvitae turning brown at the bottom?
Look at what reaches the lower branches. On crowded privacy plantings, the shaded lower branches are usually the first to thin or brown as less sunlight reaches them. Near roads, driveways, and sidewalks, salt spray and piles of salty snow often show up on the lower branches first. Soil that stays constantly wet can also cause yellowing or browning, so check drainage too.
Why is my newly planted evergreen turning brown?
A new evergreen's roots are still concentrated inside the original root ball, so it is more sensitive to drought, heat, wind, and changes in moisture during its first season. The surrounding soil can feel moist while the root ball is dry, so check the moisture inside the root ball itself. Water deeply, then check again before watering more, since soil that stays saturated can cause browning too.
Can a brown evergreen turn green again?
Brown needles won't turn green again, and fertilizer won't change that. What matters is whether the plant keeps producing healthy new growth. Correct the watering or drainage, give winter-burned foliage time to be replaced by new growth in spring, and avoid cutting back hard into old brown wood, which may not readily produce new foliage.
When should I worry about brown needles on an evergreen?
Be more concerned when the newest foliage is browning, entire branches continue to die, the tree is rapidly thinning, or the decline persists after watering, drainage, planting depth, and environmental stress have been checked. That's when it makes sense to investigate pests and diseases such as canker on Leyland Cypress, bagworms, or spruce spider mites.