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The best time to plant emerald green arborvitae is in early fall, about six to eight weeks before the first hard frost, or in early spring after the ground has thawed.
These two windows are perfect because the cool, moist conditions allow the roots to establish themselves without the stress of extreme summer heat or winter freezing.
If you’ve been wondering when to plant emerald green arborvitae, the answer really comes down to giving your new trees a gentle start in life.
Planting emerald green arborvitae at the right time is the single most important step for their long-term health and that beautiful, dense green screen you’re after.
In this post, we’ll break down the best planting seasons, the signs your soil is ready, and the exact steps to ensure your emerald green arborvitae thrive.
Let’s dig in and get those roots in the ground at the perfect moment.
When To Plant Emerald Green Arborvitae: The Ideal Seasons
When to plant emerald green arborvitae isn’t a one-size-fits-all answer, but there are two clear winners for most climates.
Fall is the absolute champion for planting emerald green arborvitae because the soil is still warm from summer, which encourages root growth even as the air cools down.
Spring is a close second, especially if you live in a region with harsh, unpredictable winters where fall planting might not give roots enough time to settle.
1. Early Fall (September To Early October)
When you plant emerald green arborvitae in early fall, you’re working with nature’s rhythm.
The soil retains warmth from the summer months, so roots can actively grow and spread before the ground freezes.
This head start means your trees will be much better prepared to survive their first winter and burst into vigorous growth come spring.
Fall planting is recommended for emerald green arborvitae in zones 3 through 7, as long as you get them in the ground at least six weeks before the first expected frost.
This timing allows the root system to anchor itself firmly, reducing the risk of frost heave that can push young plants out of the soil.
2. Early Spring (March To April)
If you miss the fall window, early spring is your next best shot for when to plant emerald green arborvitae.
Plant as soon as the soil is workable and no longer waterlogged from snowmelt, typically in March or April depending on your region.
Spring planting emerald green arborvitae gives roots a full growing season to establish before the following winter.
The cooler, wetter spring weather reduces transplant shock, so your trees can focus on root development rather than fighting heat stress.
Just be sure to water consistently through the summer, as young trees planted in spring haven’t had as much time to build a deep root network.
3. Avoid Summer And Deep Winter Planting
When should you avoid planting emerald green arborvitae?
Summer heat is the enemy of newly planted arborvitae because the leaves lose water faster than the roots can replace it, causing severe transplant shock.
Deep winter is also a no-go because frozen ground makes digging impossible and roots simply will not grow in cold soil.
So, if you’re asking when to plant emerald green arborvitae, just steer clear of July, August, and the dead of January.
The key is always to plant when the root system can actively grow, which happens best in mild temperatures between 50°F and 70°F.
Signs Your Soil Is Ready To Plant Emerald Green Arborvitae
Even if the calendar says it’s time to plant emerald green arborvitae, you need to check your soil conditions first.
You can determine the perfect time to plant emerald green arborvitae by testing the soil moisture and temperature.
1. Soil Should Be Moist, Not Muddy
When to plant emerald green arborvitae is partly dictated by soil texture.
Grab a handful of soil and squeeze it in your palm; if it forms a crumbly ball that breaks apart easily, you’re ready to go.
If it’s sopping wet and dripping water, wait a few days because planting in muddy soil leads to poor drainage and root rot.
If it’s bone dry and dusty, water the area thoroughly a day before you plant emerald green arborvitae.
2. Soil Temperature Matters More Than Air Temperature
For the best time to plant emerald green arborvitae, check the soil temperature with a simple soil thermometer.
You want the soil to be at least 45°F to 50°F for active root growth, which typically aligns with fall and spring windows.
If the soil is colder than that, the roots will just sit dormant, and your trees won’t establish well.
Using a soil thermometer takes the guesswork out of when to plant emerald green arborvitae, so you’re not relying on guesswork.
How To Plant Emerald Green Arborvitae For Maximum Success
Once you’ve locked in the right season to plant emerald green arborvitae, the next step is doing it correctly.
Proper planting technique is just as important as timing when you decide when to plant emerald green arborvitae.
1. Dig A Wide, Shallow Hole
The hole for your emerald green arborvitae should be twice as wide as the root ball but only as deep.
This encourages roots to spread outward rather than sinking too deep and drowning.
Place the tree so the top of the root ball sits level with or slightly above the surrounding soil line.
2. Backfill With Native Soil And Water Deeply
Use the soil you dug out to backfill, and avoid adding heavy amendments that create a “bathtub” effect around the roots.
After planting emerald green arborvitae, water deeply, slowly, and thoroughly until the soil is saturated.
Then, mulch with 2 to 3 inches of wood chips, keeping the mulch away from the trunk to prevent rot.
3. Water Consistently For The First Year
No matter when to plant emerald green arborvitae, the first year is all about consistent watering.
Check the soil moisture weekly and water twice a week if there’s no rain, especially in the fall before the ground freezes.
In spring, you’ll need to keep a steady watering schedule through summer to ensure the roots grow deep and strong.
So, When Is The Best Time To Plant Emerald Green Arborvitae?
The best time to plant emerald green arborvitae is definitely early fall or early spring, depending on your local climate.
You should plant emerald green arborvitae in early fall if you want the most forgiving establishment period.
You should plant emerald green arborvitae in early spring if you live in a zone with brutal winters that might freeze young roots before they settle.
Avoid summer heat and frozen winter ground at all costs, and always check soil moisture and temperature before you break ground.
When to plant emerald green arborvitae comes down to giving those roots the mild, moist conditions they crave for strong establishment.
Now you have the complete answer, so grab your shovel, pick the right season, and get those beautiful emerald green arborvitae in the ground.
Happy planting, and enjoy your new privacy screen for years to come.