Can You Trim Arborvitae With Hedge Trimmer

Yes, you can trim arborvitae with a hedge trimmer but it’s not always the best tool for the job.
 
If you’ve been wondering can you trim arborvitae with hedge trimmer, the short answer is yes for quick shaping of green growth.
 
However, using a hedge trimmer on arborvitae can lead to problems if you cut into old wood or ignore the tree’s natural growth habit.
 
In this post, we’ll cover when trimming arborvitae with a hedge trimmer works, when it doesn’t, and how to do it right.
 
Let’s dive into the details of using a hedge trimmer on arborvitae.
 

Can You Trim Arborvitae With a Hedge Trimmer? Here’s the Truth

You can trim arborvitae with a hedge trimmer as long as you stick to the green, leafy parts.
 
Arborvitae trees have a unique growth pattern where new growth only appears on the outer layer of green foliage.
 
Once you cut into the brown, woody interior, that part of the tree won’t regrow.
 
So trimming arborvitae with a hedge trimmer requires a careful hand to avoid permanent damage.
 

1. The Simple Answer: Yes, With Limits

Yes you can trim arborvitae with hedge trimmer, but only on the soft, green tips.
 
Hedge trimmers are great for making uniform cuts across a row of arborvitae.
 
But if you cut too deep, you’ll create bare spots that never fill back in.
 
So while trimming arborvitae with a hedge trimmer is possible, you must respect the tree’s growth zone.
 

2. When It’s Safe to Use a Hedge Trimmer on Arborvitae

It’s safe to trim arborvitae with a hedge trimmer when you’re only removing a few inches of growth.
 
If you’re shaping a hedge or maintaining a uniform height, a hedge trimmer works perfectly.
 
Just make sure you’re cutting only the bright green foliage at the tips.
 
Avoid cutting into the dark brown branches underneath.
 
That way you can enjoy a neat look without risking the tree’s health.
 

3. When a Hedge Trimmer Is a Bad Idea for Arborvitae

Don’t trim arborvitae with a hedge trimmer if you need to remove thick, woody branches.
 
Hedge trimmers are not designed to cut branches larger than about ⅜ inch in diameter.
 
For bigger cuts, use pruning shears or a handsaw instead.
 
Also avoid using a hedge trimmer on arvitae that have already been heavily pruned in the past.
 
Repeated hedge trimming can create a dense outer shell that blocks light and air from the interior.
 
That can lead to disease and dieback inside the tree.
 

Why You Might Want to Trim Arborvitae With a Hedge Trimmer

There are good reasons to consider trimming arborvitae with a hedge trimmer for certain tasks.
 
Speed and efficiency are the biggest benefits when you have a long row of arborvitae.
 
A hedge trimmer can shape an entire hedge in minutes compared to hours with hand pruners.
 
But you must balance speed with care to avoid butchering your tree.
 

1. Quick Maintenance Shearing

If you want a formal, manicured look, trimming arborvitae with a hedge trimmer is ideal.
 
Shearing the new growth once a year keeps the hedge dense and well-shaped.
 
Just don’t shear too late in the season because new cuts need time to heal before winter.
 

2. Controlling Height

To keep arborvitae from growing too tall, you can trim the top with a hedge trimmer.
 
But only cut into the green layer at the top.
 
Cutting into the brown leader will ruin the tree’s shape permanently.
 
So if you need to reduce height significantly, do it over several years by cutting just a little each time.
 

3. Tidying Up a Hedge Row

For a long row of arborvitae that has become uneven, a hedge trimmer is your best friend.
 
You can quickly even out the sides and top as long as you stay in the green zone.
 
Just remember that trimming arborvitae with a hedge trimmer leaves cut ends that may brown slightly.
 
Those browned tips will be hidden by new growth within a few weeks if the tree is healthy.
 

Best Practices for Trimming Arborvitae With a Hedge Trimmer

To get the best results when you trim arborvitae with hedge trimmer, follow these guidelines.
 
These practices will keep your tree looking great and growing strong.
 

1. Timing Matters

The best time to trim arborvitae with a hedge trimmer is in late spring after the first flush of growth.
 
A second light trim in early summer is fine if needed.
 
Avoid trimming in late fall because new cuts are vulnerable to frost damage.
 

2. Keep Your Blades Sharp and Clean

Dull blades will tear the foliage instead of cutting it cleanly.
 
Always use sharp blades when trimming arborvitae with a hedge trimmer to ensure clean cuts.
 
Clean the blades with a disinfectant between trees to prevent spreading disease.
 

3. Cut at a Slight Angle

When you trim arborvitae with a hedge trimmer, tilt the blades slightly so the top of the hedge is narrower than the bottom.
 
This allows sunlight to reach the lower branches and keeps the tree full all the way down.
 
If you cut the hedge straight up and down, the top will shade the bottom and cause bare spots.
 

4. Never Cut Into the Brown

This is the golden rule of trimming arborvitae with a hedge trimmer.
 
Always stop before you reach the brown, woody interior.
 
If you accidentally cut too deep, that area will stay bare forever.
 
Use hand pruners for any branch that requires a deeper cut.
 

5. Clean Up After Trimming

Leftover clippings can trap moisture and invite pests.
 
Rake up all the cut foliage after you trim arborvitae with a hedge trimmer and dispose of it.
 
This keeps the area around the tree clean and healthy.
 

So, Can You Trim Arborvitae With a Hedge Trimmer?

You can trim arborvitae with a hedge trimmer, but only if you follow the rules.
 
The key is to trim only the green growth and never cut into the brown inner wood.
 
When done correctly, trimming arborvitae with a hedge trimmer is a fast and effective way to maintain a neat hedge.
 
Just remember that hedge trimmers are for light maintenance, not heavy pruning.
 
For bigger jobs, stick to hand tools.
 
Hope this post helped you understand when and how to trim arborvitae with a hedge trimmer safely.