Difference Between American Pillar and Green Giant Arborvitae
As of 2023, we estimate that the Green Giant Arborvitae makes up over 50% of total US demand for Thujas while American Pillar Arborvitae makes up less than 1%. However, the driver for demand in this case is the constrained availability and high price of American Pillar Thuja.
The main differences between the two varieties:
Growth Habit:
- Green Giant Arborvitae when planted in a row a few Feet apart it will mature with a height of 25 to 30 feet and have a spread of 8 to 10 feet at the base. At midway height it will have a spread of 3-4 feet.
- American Pillar Arborvitae is columnar shaped Thuja. It is often used for creating privacy screens in limited spaces. At maturity, it can reach heights of 20 to 30 feet with a width of only 3 to 4 feet.
Use in Landscaping:
- Green Giant: Due to its large size, Green Giant is well-suited for creating substantial privacy screens and windbreaks.
- American Pillar: American Pillar's narrow form makes it an excellent choice for creating privacy screens in tight spaces.
Growth Rate:
- Both can grow around 4 feet a year under ideal conditions.
Foliage Color:
- Nearly identical.
Cold Hardiness:
- Both will tolerate the Florida climate all the way to Michigan.
When choosing between the two, available space will point to which is the optimal solution.
Green Giant Arborvitae, spaced 7’ apart in each row, Lexington, KY
American Pillar Arborvitae in 7 Gallon pot, has grown 3 feet in height in the Spring, Dry Ridge, KY
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