How Often To Fertilize Arborvitae

You should fertilize arborvitae about once a year in early spring.
 
That simple schedule works for most established trees in average soil.
 
How often to fertilize arborvitae really depends on the age of the tree and the quality of your soil.
 
Younger arborvitae might need a lighter feeding while older ones often thrive with just one annual application.
 
In this post, we’ll dig into how often to fertilize arborvitae so your trees stay green and full all year.
 
We’ll cover the factors that can change that schedule and the best ways to fertilize your arborvitae.
 
Let’s get started.
 

How Often to Fertilize Arborvitae

How often to fertilize arborvitae isn’t a one-size-fits-all answer.
 
But for most homeowners, a single feeding each spring is enough.
 
Here are the key factors that determine how often to fertilize arborvitae:
 

1. Age of the Arborvitae

Young arborvitae that were planted in the last two years benefit from a lighter fertilizing session.
 
For these trees, fertilizing once a year is ideal because their roots are still establishing.
 
Mature arborvitae, on the other hand, often do fine with fertilizing every two years if the soil is rich.
 
How often to fertilize arborvitae therefore shifts as the tree matures.
 

2. Soil Fertility

If your soil is naturally rich in organic matter, you can fertilize arborvitae less often.
 
In poor or sandy soils, you may need to fertilize arborvitae twice a year.
 
A soil test is the best way to know how often to fertilize arborvitae in your yard.
 
Without testing, stick to the once-a-year rule and adjust based on tree color.
 

3. Type of Fertilizer Used

Slow-release granular fertilizers let you fertilize arborvitae only once a year.
 
Quick-release liquids require you to fertilize arborvitae more often, maybe every six to eight weeks.
 
How often to fertilize arborvitae depends heavily on which product you choose.
 
Always follow the label instructions for your specific fertilizer.
 

When to Fertilize Arborvitae for Best Results

Timing is just as important as frequency when you fertilize arborvitae.
 
Here’s the best window for fertilizing your trees:
 

1. Early Spring Before New Growth

The ideal time to fertilize arborvitae is in early spring as the ground thaws.
 
This gives the roots a chance to absorb nutrients just as the tree wakes up.
 
How often to fertilize arborvitae in spring is straightforward: once at the start of the season.
 
Avoid fertilizing in late summer or fall because it can trigger tender growth that winter kills.
 

2. Late Fall in Warmer Climates

In mild zones where winters are short, you can fertilize arborvitae again in late fall.
 
But this is only needed if you’re wondering how often to fertilize arborvitae for maximum growth.
 
Most gardeners stick to annual spring feeding and see great results.
 

How to Apply Fertilizer to Arborvitae

Knowing how often to fertilize arborvitae is useless without proper application.
 
Here’s what to do when you fertilize your arborvitae:
 

1. Measure the Right Amount

Use a balanced fertilizer like 10-10-10 or a slow-release formula made for evergreens.
 
Spread it evenly under the drip line, not right against the trunk.
 
How often to fertilize arborvitae affects the amount, so don’t double up if you feed twice a year.
 

2. Water Thoroughly After Fertilizing

After you fertilize arborvitae, water deeply to help nutrients reach the roots.
 
This prevents root burn and ensures the tree actually uses the food.
 
If you’re fertilizing in dry weather, water again a day later.
 

So, How Often to Fertilize Arborvitae?

You should fertilize arborvitae once a year in early spring for most situations.
 
How often to fertilize arborvitae can increase to twice a year only if your soil is poor or you use quick-release fertilizer.
 
Young trees and container-grown arborvitae may need a lighter but more frequent fertilizing schedule.
 
Always watch your tree’s color and growth to fine-tune how often to fertilize arborvitae in your landscape.
 
Happy gardening and enjoy your lush green arborvitae.