Why Are My Dwarf Boxwoods Turning Orange

Your dwarf boxwoods are turning orange due to a combination of environmental stress, improper care, or seasonal changes.
 
If you’ve been asking why are my dwarf boxwoods turning orange, the answer often lies in winter burn or cold damage.
 
Dwarf boxwoods turning orange can also signal a nutrient deficiency or a pest problem.
 
When your dwarf boxwoods turn orange, it’s usually a sign the plant is reacting to something in its environment.
 
In this post, I’ll walk you through why dwarf boxwoods turn orange and what you can do about it.
 
Let’s dive into the reasons behind that orange color.

Why Are My Dwarf Boxwoods Turning Orange? Common Causes

Dwarf boxwoods turning orange is often the first noticeable symptom of an underlying issue.
 
Many backyard gardeners panic when they see dwarf boxwoods turn orange, but most causes are reversible.
 
Here are the most common reasons why dwarf boxwoods turn orange.

1. Winter Burn or Cold Stress

The number one reason why are my dwarf boxwoods turning orange in late winter or early spring is winter burn.
 
When the ground freezes, boxwood roots can’t take up water, but the leaves still lose moisture through transpiration.
 
This desiccation causes the foliage to turn an orange or bronze color.
 
Dwarf boxwoods turning orange from winter burn is especially common in exposed, windy locations.
 
The damage usually appears on the side facing the wind or where snow reflects sunlight.

2. Nutrient Deficiencies

If you’re wondering why are my dwarf boxwoods turning orange in summer, check the soil nutrients.
 
Dwarf boxwoods turning orange can result from a lack of nitrogen, iron, or magnesium.
 
When dwarf boxwoods turn orange due to poor nutrition, older leaves often discolour first.
 
Yellowing that shifts to orange indicates a possible iron deficiency, especially in alkaline soils.
 
A soil test will tell you exactly what’s missing.

3. Overwatering or Poor Drainage

Another reason dwarf boxwoods turn orange is soggy roots from overwatering or heavy clay soil.
 
Boxwoods hate wet feet, and when roots suffocate, leaves turn orange and drop.
 
If your dwarf boxwoods are turning orange after rain or irrigation, check for standing water.
 
Poor drainage prevents roots from absorbing nutrients, which then shows as orange foliage.

4. Pest Infestations

Pests can also answer why are my dwarf boxwoods turning orange when other factors seem fine.
 
Boxwood mites and psyllids suck sap from leaves, causing stippling and an orange or bronze cast.
 
If dwarf boxwoods turning orange have tiny specs or cupped leaves, mites are likely the culprit.
 
Leafminers create blisters that turn orange as the larvae feed inside the leaf tissue.

5. Fungal Diseases

Fungal infections like boxwood blight or Volutella stem canker cause dwarf boxwoods to turn orange.
 
When dwarf boxwoods turn orange from disease, you’ll often see black streaks on stems or leaf spots.
 
Volutella canker leads to orange-brown leaves that remain attached to the plant.
 
Good air circulation and avoiding overhead watering help prevent these issues.

How to Diagnose Orange Boxwood Leaves

You need to figure out exactly why your dwarf boxwoods are turning orange before you treat them.
 
A proper diagnosis saves time and prevents further stress to the plant.

Check the Timing

Notice when the dwarf boxwoods turning orange appeared.
 
Winter burn shows up in late winter or early spring as the ground thaws.
 
Summer orange leaves point to pests, disease, or watering problems.
 
If dwarf boxwoods turn orange right after a cold snap, it’s likely frost damage.

Inspect the Leaves and Stems

Look closely at the affected areas.
 
If only the outer leaves are orange and the inner foliage is green, winter burn is probable.
 
Dwarf boxwoods turning orange with tiny yellow spots suggest spider mites.
 
Black cankers or leaf spots indicate a fungal disease that caused the orange color.

Test Soil Moisture and pH

Stick your finger into the soil near the roots.
 
If it’s wet and muddy, overwatering is a likely reason dwarf boxwoods turn orange.
 
If it’s bone dry, drought stress could be the cause.
 
Test soil pH – boxwoods prefer slightly acidic to neutral soil (pH 6.5–7.0).
 
High pH locks up iron, which makes dwarf boxwoods turning orange from deficiency.

Steps to Fix and Prevent Orange Boxwood Foliage

Once you know why are my dwarf boxwoods turning orange, you can take action.
 
Most fixes are simple and restore the green color over a few weeks.

Adjust Watering Practices

Water deeply but infrequently, letting the top few inches of soil dry between waterings.
 
If your dwarf boxwoods turning orange from overwatering, improve drainage by adding organic matter.
 
Mulch around the base to retain moisture and regulate soil temperature.
 
Avoid wetting the foliage to reduce fungal risks that cause dwarf boxwoods to turn orange.

Apply Proper Fertilizer

For nutrient‑related orange color, use a balanced slow‑release fertilizer formulated for evergreens.
 
If dwarf boxwoods turn orange from iron deficiency, apply chelated iron according to package directions.
 
A spring feeding helps prevent dwarf boxwoods turning orange later in the season.

Protect from Harsh Winter Conditions

Winter burn is the most common reason dwarf boxwoods turn orange in cold climates.
 
Wrap susceptible plants in burlap or install a wind barrier before the first freeze.
 
Water deeply in late fall so the roots have moisture stored for winter.
 
Apply an anti‑desiccant spray to evergreen leaves to reduce moisture loss.
 
This simple step can stop your dwarf boxwoods turning orange come spring.

Treat Pests and Diseases

For mites and psyllids that make dwarf boxwoods turn orange, use horticultural oil or insecticidal soap.
 
Prune out diseased branches and dispose of them to prevent spread.
 
If boxwood blight is the reason dwarf boxwoods turn orange, remove the entire plant to protect others.
 
Fungicides can help with Volutella canker if applied early.

So, Why Are My Dwarf Boxwoods Turning Orange?

Your dwarf boxwoods are turning orange due to one or more of the stress factors discussed above.
 
Winter burn, nutrient deficiencies, overwatering, pests, or disease can all cause dwarf boxwoods to turn orange.
 
The good news is that most causes are manageable with the right care.
 
Start by diagnosing the specific reason your dwarf boxwoods are turning orange, then take the appropriate steps.
 
With a little attention, those orange leaves can turn back to a healthy green.
 
I hope this post helped you understand why dwarf boxwoods turn orange and how to fix it.
 
Happy gardening.