Description & Overview

Green Giant is a fast-growing evergreen with a naturally pyramidal to conical form. Flaunting dense and rich green sprays of foliage that bronze slightly in the winter, trees may grow to 40 to 60 feet tall with a spread between 12 and 20 feet. Small, light-brown seed cones will develop in mid-summer and are concentrated toward the top of the tree. Green Giant is a hybrid of the North American native Thuja plicata and the Thuja standishii (native to Southern Japan), taking the best features of each to create a more disease-resistant, narrow, and pyramidal Arborvitae.

Core Characteristics

Category: Conifer

Wisconsin Native: No

USDA Hardiness Zone: to zone 5

Mature Height: 40-60 feet

Mature Spread: 12-20 feet

Growth Rate: Moderate

Growth Form: Upright, conical, pyramidal

Light Requirements: Full Sun

Site Requirements: Alkaline, average to moist, well - drained

Flower: N/A

Bloom Period: N/A

Foliage: Dark green

Fall Color: None

Urban Approved: Yes

Fruit Notes: Small, light brown seed cones, ½" long

Suggested Uses

As land is developed and the population increases, people desire more privacy and want to create an at-home sanctuary. A fence can be expensive, can sometimes be perceived as a little standoffish by neighbors, and doesn’t add much in the way of personality, visual interest, or benefit to the environment. If you aren’t looking to shell out the money or want to explain to your neighbor “that it’s nothing personal…” a living wall may be the best option for you.

Fences often have code regulations behind the height or style you’re allowed to build, also, what about that neighbor’s second-story window looking over your patio area? A fence cannot block that but an evergreen tree can and will add ornamental value to the landscape and provide the cover you need.

Do you have an unsightly utility box that needs to magically disappear? What about that annoying security light on the neighbor’s garage that shines into your bedroom window? Do you have an unsightly view of a highway, or simply want to reduce the noise level? Consider Green Giant Arborvitae as it can easily fill this role, and quickly!

Green Giant Arborvitae provides excellent screening and can be a hedge when plants are pruned from a younger age as they handle sheering nicely. The dark green foliage provides a beautiful background to accent other plants, especially those with great winter interest, fantastic fall colors, stunning white flowers, or bright red stems.

Use Green Giant in new housing developments, suburban lots, or in a country setting as a windbreak or barrier.

Try Green Giant Arborvitae out and be surprised at how effective it is!

Green Giant is a fast-growing evergreen with a naturally pyramidal to conical form. Flaunting dense and rich green sprays of foliage that bronze sligh…
Green Giant is a fast-growing evergreen with a naturally pyramidal to conical form. Flaunting dense and rich green sprays of foliage that bronze sligh…

Wildlife Value

Green Giant Arborvitae provides cover, shelter, roosting, and nesting habitat for many birds that take refuge in the thick foliage.

Seeds are sometimes eaten by deer mice but are not preferred.

This is a host plant for the Rusty Tussock Moth (Orgyia antiqua), Mottled Gray Carpet (Cladara limitaria), Small Engrailed (Ectropis crepuscularia), Common Gray (Anavitrinella papinaria), Renounced Hydriomena Moth (Hydriomena renunciata), Pale Beauty (Campaea perlata), and Larch Pug Moth (Eupithecia annulata).

Maintenance Tips

Selected to grow in a uniform shape, Green Giant Arborvitae is low-maintenance and doesn’t require the need for pruning or shearing (unless they are being used as a hedge).

A healthy mulch layer will help retain soil moisture.

Green Giant is a fast-growing evergreen with a naturally pyramidal to conical form. Flaunting dense and rich green sprays of foliage that bronze sligh…

Pests/Problems

Black Walnut Tolerant: No
Deer Resistant: No
Rabbit Resistant: No

Although more tolerant than other species of Arborvitae, nothing will stop hungry deer from snacking, and Green Giant is no exception. If you have deer in your area, you may want to consider an entirely different type of evergreen such as a Star Power Juniper, the most deer-resistant conifer.

This hybrid is sensitive to salt spray and salt in the soil and should not be planted near roads or driveways where salt is used.

Leaf Lore

The genus name Thuja is the Greek name for Juniper (Juniperus). The specific epithet plicata means ‘pleated’ while standishii honors English nurseryman John Standish (1809-1875).

In optimal growing conditions, Green Giant arborvitae can grow 3 to 4 feet per year! It has an average lifespan of 40-60 years.

The largest Western Arborvitae (Thuja plicata) is the Cheewhat Giant in the Pacific Rim National Park Reserve, while the tallest specimen is 195′ tall and located in Aberdeen, Washington.

Companion Plants

To add diversity to your green screen, combine Green Giant with Star Power Juniper, Taylor Juniper, Cypress Spruce, Hill Dundee Juniper, Holmstrup Arborvitae, Burkii Juniper, Degroot’s Spire, White Pine, Norway Spruce, Serbian Spruce, Techny Arborvitae, Pyramidal Arborvitae, Iowa Juniper, and Emerald Arborvitae.

Green Giant is a fast-growing evergreen with a naturally pyramidal to conical form. Flaunting dense and rich green sprays of foliage that bronze sligh…
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Written by Beth DeLain