How Quickly Do Emerald Green Arborvitae Grow – A Practical Growth
Emerald Green Arborvitae (Thuja occidentalis ‘Smaragd’) typically grow between 6 to 12 inches per year under ideal conditions.
While they are considered moderate growers, their final height often reaches 12 to 15 feet, making them a favorite for privacy screening.
You want a lush, dense privacy screen, but you do not want to wait a lifetime to see it happen. If you have been asking yourself how quickly do emerald green arborvitae grow, you are certainly not alone.
These evergreen beauties are a staple in residential landscaping for a good reason. They provide year-round color, a classic conical shape, and excellent sound buffering.
In this guide, I will break down the growth cycle of these trees and share the expert techniques you need to help them thrive in your yard. Let’s turn that empty fence line into a vibrant, living wall.
Understanding how quickly do emerald green arborvitae grow
When we discuss how quickly do emerald green arborvitae grow, it is important to remember that nature rarely works in a straight line. While 6 to 12 inches is the industry standard for annual growth, environmental factors play a massive role.
In their first year after planting, these trees often focus on root establishment rather than vertical height. Do not be discouraged if your new arrivals seem to stall during the first season.
Once the root system settles, you will see consistent upward progress. By year three, with proper care, you should see the trees hit that “sweet spot” of steady, predictable growth.
Essential conditions for optimal growth
The speed of your arborvitae depends heavily on the “Big Three”: light, water, and soil quality. If any of these are lacking, your trees will struggle to reach their full potential.
The importance of sunlight
Emerald Greens crave full sun. They need at least six to eight hours of direct sunlight daily to maintain their vibrant green color and dense foliage.
If you plant them in deep shade, they will grow slowly and become “leggy,” losing that tight, pyramidal shape you desire. If your yard has partial shade, expect the growth rate to drop to the lower end of the spectrum.
Soil health and nutrition
These plants prefer well-drained, slightly acidic soil that is rich in organic matter. Before planting, test your soil to ensure the pH level sits between 6.0 and 7.5.
If your soil is heavy clay, mix in organic compost to improve drainage. Proper aeration is vital; roots need to breathe to pull nutrients from the earth effectively.
Watering strategies for young trees
New trees are vulnerable. During the first two growing seasons, you must keep the soil consistently moist but never waterlogged.
Use a soaker hose or drip irrigation to deliver water directly to the root zone. Avoid overhead watering, as wet foliage can encourage fungal diseases like needle blight.
Check the soil moisture by inserting a finger two inches into the ground. If it feels dry, it is time to hydrate. If it feels soggy, hold off to prevent root rot.
Mulching and feeding for maximum height
Mulching is a simple step that yields massive results. Apply a 2- to 3-inch layer of organic wood mulch around the base of the tree, keeping it a few inches away from the trunk.
Mulch regulates soil temperature and retains moisture, creating a stable environment that encourages faster growth. Avoid “mulch volcanoes,” which can trap moisture against the bark and invite pests.
Regarding fertilizer, a balanced, slow-release granular fertilizer with an NPK ratio like 10-10-10 works well. Apply it in early spring before the first flush of new growth appears.
Managing common pests and diseases
Even healthy plants face challenges. Keep an eye out for bagworms, which can strip the foliage and stunt growth quickly. You can remove small infestations by hand-picking the bags in winter.
Spider mites are another common nuisance, especially during hot, dry spells. If you notice the foliage turning a dull, bronzed color, check the underside of the needles for tiny webs.
A gentle blast of water or an application of horticultural oil usually resolves these issues. Always follow safety labels when using any garden chemicals.
Frequently Asked Questions
Do these trees require pruning to grow faster?
Actually, no. Emerald Greens have a naturally dense, conical shape. Excessive pruning can actually slow down their vertical growth by removing too much foliage at once.
Can I plant them too close together?
Yes. If you crowd them, they compete for nutrients and light, which slows everyone down. Space them 2 to 3 feet apart for a solid screen, and ensure they have room to breathe.
What happens if the tips turn brown?
Browning tips often indicate winter burn or drought stress. Ensure they are well-watered into the late autumn months before the ground freezes, as this is the best defense against winter desiccation.
Are they deer resistant?
They are moderately resistant, but hungry deer will eat almost anything in winter. If you live in an area with a high deer population, consider using protective netting or repellents during the colder months.
Conclusion
Now that you know how quickly do emerald green arborvitae grow, you can manage your expectations and provide the right care for your landscape. While you cannot force a tree to grow overnight, you can certainly optimize its environment for success.
Focus on consistent watering, proper spacing, and healthy soil, and you will be rewarded with a lush, green barrier that stands the test of time. Take your time, enjoy the process, and watch your garden transform season by season.
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