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Green Giant Arborvitae

Thuja x. ‘Green Giant’

> Green Giant Arborvitae
Green Giant Arborvitae2020-08-07T11:31:06+00:00
Green Giant Arborvitae is a fast-growing hedge that 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, Green Giant looks vibrant year-round with great winter color. Green Giant Arborvitae is a large, vigorous and a handsome hedge choice for privacy and screening purposes.
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This arborvitae (Thuja 'Green Giant') InstantHedge unit is in a biodegradable cardboard container and ready to be shipped for a privacy screen.

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

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

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

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

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

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

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

Green Giant Arborvitae : 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:
  • Thuja Green Giant is Evergreen with excellent year-round color
  • 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, Green Giant Arborvitae can grow at an impressively fast rate, up to 4 feet per year!

Thuja ‘Green Giant’ makes a dense, thick, 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.

Thuja ‘Green Giant’ was introduced to the United States in 1967, when the U.S. National Arboretum planted a specimen sent from a Danish botanist. It was selected for its impressive growth rate and vigor.

USDA Hardiness Zones:5 - 8
Your Hardiness Zone:
ZIP: 

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. Beautiful green giant tree for backyard privacy.
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’). With the speed of the Thuja ‘Green Giant’ growth rate, it appears to demonstrate what is called “hybrid vigor”, making it grow faster and have better pest resistance than either of its parents. 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.

Color

Some Arborvitae types tend to go off-color in winter months, developing a brown or bronze cast. Green 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. Green giant arborvitae for sale online.

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

Disease-resistance

Many arborvitae tend to have problems with diseases and pests, but Green Giant Arborvitae 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 Thuja ‘Green Giant’. Pests tend to attack weak plants, and this variety does not fit that description.

Climate Tolerance

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.

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

A Green Giant hedge 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.

Why choose InstantHedge?

As you know, Green Giant 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 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? We have multiples sizes of Green Giant Arborvitae for sale almost constantly.

For more information about Thuja x ‘Green Giant’, please visit the American Conifer Society.