Thuja plicata or Western Red Cedar is cold hardy, maintains a nice green color in winter, and is deer resistant. The dark green, fan-shaped foliage is loose and open, however the plant grows thickly creating a dense screen. Definately a narrow columnar habit. This evergreen offers more versatility in home landscape. Many other types of arborvitae are commonly used in landscapes; small globes and those with golden foliage.
Older trees develop small cones — which is why they are conifers. They are called cedars, arborvitae, or thujas — all these are the same trees. Of those 5 species, three are native to North America, and two to Asia. Their connection dates back to the time before the Pacific Ocean pushed those two continents apart. This tree saved the lives of the early settlers, when native Americans showed them how to make a tea from the foliage that prevented the development of scurvy in the wintertime.
That was in , and the great virtue of this plant was that it stayed green all winter, instead of turning bronzy-green they way most of these plants do.
That is why grateful American gardeners nicknamed it Emerald Green. The story of Green Giant is more complex, and also happened in Europe, at the same Danish nursery — D. In the s they found a plant that they believed was a hybrid between a Japanese Thuja Thuja standishii and a Western Redcedar Thuja plicata , they had growing near each other.
These two plants grow on opposite sides of the Pacific Ocean, so they could only meet when brought together in a garden. Because of world events it was only in the s that a specimen arrived in America, and only in the early s that nurserymen noticed this plant and realize what a great hedging and screening plant it would make. On this question there is no doubt. While Emerald Green is certainly a steady grower, adding as much as 12 inches a year once established, under good growing conditions, Green Giant puts that to shame.
Does not tolerate drought. Thrives in part shade in warmer climates or full sun in cooler climates. Fertile, well-drained soils. Moderately acidic soils are okay. The Japanese arborvitae is a commercially important timber tree in Japan. It is also one of the five sacred trees of Kiso , a productive forest in central Japan. Needs a moderate amount of moisture.
Will not tolerate drought. Full sun in cooler climates and some shade in hotter climates. Does not grow attractively in full shade. Prefers well-drained loams with a neutral to slightly alkaline pH. Needs moderate moisture and will not tolerate much drought. Prefers full sun in the cooler climates where it can grow and part shade in the warmer climates in its range.
The Sichuan thuja is the most threatened of wild arborvitae species. In fact, it was thought to be the only conifer extinct in the wild until it was rediscovered in a nature preserve in Sichuan province in While no conifers are currently extinct, they are a very threatened group of trees.
In nature, this tree grows in relatively wet areas that receive 1. Prefers south-facing slopes, so presumably prefers full sun. The eastern arborvitae is the main source of horticultural arborvitae varieties. Thuja occidentalis native to eastern North America. Much like the western red cedar, this arborvitae is a useful tree that provided crucial materials for indigenous people of the eastern U. Another common name for the eastern arborvitae is the northern white cedar.
This tree is a prime example of how naming plants is confusing! Does best in full sun or part shade in hotter parts of its range. Somewhat broad soil tolerance. The golden globe variety of arborvitae is typically used as an accent in landscapes. The low, symmetrical shape of this shrub, combined with its interestingly-colored, year-round foliage makes it a garden favorite. The north pole arborvitae is perfect for privacy hedges. It grows tall and narrow. These trees quickly fill the space between them when planted close together.
As suggested by its name, these trees are particularly relevant for inhabitants of colder climates. They grow in a pyramidal shape. Needs moderate to frequent water. The pyramid shape of the green giant arborvitae crowds a pathway. The green giant arborvitae is a hybrid between the western red cedar and the Japanese thuja. This large arborvitae can grow up to 60 feet tall, making it one of the taller arborvitae varieties available. When planted in a row, these tall trees make an exceptional windbreak.
This plant will grow best in fertile, well-drained soils. If you are looking for an evergreen that can stand up to the cold and harsh winter weather, check out the Emerald Green Thuja.
It is recommended for growing zones 3 through 8 and can survive freezing temperatures that dip down to degrees.
Thuja Green Giants can handle snow and ice, but not at the same level as Emerald Greens. Green Giants are recommended for growing zones 5 through 9, and can withstand freezing temperatures down to degrees, so they still grow extremely well in northern areas. However, Thuja Green Giants are an excellent option for hot areas.
Thuja Green Giants are very attractive with dense, dark green foliage. They provide a dark background for flowering trees and shrubs to pop against.
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