Green Giant Arborvitae Hedge

Thuja x. ‘Green Giant’

> Green Giant Arborvitae Hedge
Green Giant Arborvitae Hedge2019-10-14T09:58:15+00:00
Green Giant Arborvitae is a fast-growing hedge, thrives in heat and humidity, which makes it an especially popular hedge choice in the regions around the Southern United States. With sturdy evergreen foliage, the tree looks vibrant year-round with great winter color.

This arborvitae (Thuja 'Green Giant') InstantHedge unit is in a biodegradable cardboard container and ready to be shipped for a privacy screen.


Neatly-maintained rows of arborvitae (Thuja) hedge ready to be harvested and shipped for landscape jobs.


The lush foliage of this arborvitae (Thuja 'Green Giant') hedge can be trimmed to form a dense evergreen wall.


Green Giant hedges in the field, nearly ready to harvest.


A row of finished arborvitae (Thuja) hedges stretching as far as the eye can see.


A row of finished arborvitae (Thuja) hedges stretching as far as the eye can see.


Root development of young plants is checked periodically to ensure that only the strongest plants are selected to form InstantHedges.


Young starts of arborvitae (Thuja 'Green Giant') wait in a greenhouse to be planted in neat rows to form InstantHedges.

Quick Guide

Green Giant Arborvitae growing region zone 5-8
There are a number of immediate benefits to choosing & planting Green Giant Arborvitae for your next hedge:
  • Evergreen with excellent year-round color
  • Thuja Green Giant Arborvitae Tolerates a range of different soil conditions, heat, and humidity
  • Dense growth habit works well with casual or regular pruning
  • Grows very fast, making it great for privacy hedges

Thuja x Green Giant Details

The evergreen Green Giant Arborvitae is a fast-growing arborvitae hybrid that has been promoted as a disease-free substitute for other evergreens, especially in the humid southeastern United States.

In the proper growing environment, the tree can grow at an impressively fast rate, up to 4 feet per year!

Thuja Green Giant Arborvitae makes a dense, compact, lovely hedge with regular pruning.

With slightly upturned horizontal branching and scale-like dark evergreen foliage, Green Giant makes a great accent in any outdoor space.

Durable, tall, and strong-rooted Green Giant Arborvitae makes an especially solid screen or windbreak hedge with almost no disease issues.

The hedge was introduced to the United States in 1967, when the U.S. National Arboretum planted a specimen sent from a Danish botanist.

USDA Hardiness Zones:5 - 8
Your Hardiness Zone:

Sun/Shade:Full Sun to Partial Shade
Deer Resistance:Some
Watering Requirements:Weekly, or more often in extreme heat
Growth Rate:Fast, up to 3’ to 4’ per year
Mature InstantHedge Height and Width:Up to 12’ height and 4’ width - trimmed
Drought Tolerance:Moderate
West Coast - Sunset Heat Zones:1 - 9 and 14 - 24
Pest/Disease Issues:
No major pest or disease issues. Bagworm and rots may occur.

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All About Thuja Green Giant Arborvitae Hedge

Thuja green giant arborvitae for sale
Growth Rate

Green Giant Arborvitae was a somewhat mysterious hybrid originating at a nursery in Denmark. After a war, intercontinental transit, and some poor record-keeping, a noteworthy tree was finally set aside in the 1960’s as something very special at the National Arboretum in Washington, D.C. The characteristic that really impressed the arboretum staff was its unusually large size and fast growth. Years later, as technology improved, DNA testing on the plant showed that the special seedling was a cross between Western Red Cedar (Thuja plicata – a giant conifer species native to the Pacific Northwestern US with mature heights up to 230’!) with a Japanese Arborvitae (Thuja standishii – native to Japan, mature heights up to 100’). Thuja Green Giant Arborvitae appears to demonstrate what is called “hybrid vigor”, making it grow faster and have better pest resistance than either of its parents.

Thuja Green Giant growth rate is fast. Under good conditions, it can grow 3-4’ per year, sometimes even growing 5’ in a year!

Growth habit

So what makes Thuja x Green Giant more desirable than a different fast grower, like Leyland Cypress? The wonderful thing about this hedge is that it has fast growth combined with a narrow, upright habit. At 10 years, you could have a tree that is 12’ tall by 4’ wide, without even trimming it. Now imagine with hedge trimming how nice, tall, and narrow it could be!


Some Arborvitae types tend to go off-color in winter months, developing a brown or bronze cast. Giant Arborvitae , however, keeps a beautiful bright green color all year long. Evergreens really should be gorgeous in winter, since they are the only things providing color to the landscape!

thuja green giant growth rate

Thuja Green Giant maintains its bright green color even in winter.


Many arborvitae tend to have problems with diseases and pests, but Green Giant Arborvitae Tree has noteworthy resistance to the common issues. It even has some deer resistance, which makes it an improvement over deer-favorite Thuja occidentalis. The main problems you could encounter would be either too little or too much water, or not enough fertilizer. Just give it moderate water, especially right after planting or in hot months, but make sure it is in a well-draining area. Pest problems could include bagworms or scale but these instances are extremely rare due to the vigorous nature of the Thuja Green Giant. Pests tend to attack weak plants, and this hedge do not fit that description.

Climate Tolerance

Thuja Green Giant Arborvitae is hardy in USDA Zones 5-8, which covers a good portion of the United States. This range can be stretched a bit into Zone 9 regions that are humid in summer. Arid Zone 9 areas will be tough on Thuja Green Giant in the summer, but as long as there is ample water it will do fine. This makes it popular in Florida and other southern states.

This hedge does well in full sun but can also manage in partial shade (at least 6 hours of sun daily).

The Green Giant plant will thrive in almost any type of soil. If you are planting in an extremely sandy soil with poor nutrients and water-retention, amend your soil with compost generously before planting and apply a thick layer of mulch yearly to help improve the soil’s structure. If planting in a wet area, mound up the ground where you are planting the hedge to provide some better drainage. Areas with prolonged standing water will be difficult for most plants to endure, but check out the Bald Cypress if you are in a very swampy area.

Why choose InstantHedge?

As you know, the grows fast. There is a crucial period in the life of a fast-growing hedge where a strict pruning regimen must be followed, or you could end up with a lanky, thin hedge for the next several decades. The timing, intensity, and frequency of pruning are all important to keep the hedge dense and beautiful, and some of the requirements are counter-intuitive (“If I want my hedge to grow bigger, I should prune it more…wait, what?”)

With InstantHedge, we take care of that part for you. When you purchase a Thuja Green Giant Arborvitae InstantHedge, you are guaranteed a vigorous, healthy, finished hedge from day one. The hedges will arrive pre-shaped and with a vibrant root system that is ready to grow and establish. Why not start with a hedge that has already been finished by hedge experts? Buy green giant arborvitae for sale Now!

For more information, visit the American Conifer Society.