‘Green Giant’ is a fast-growing arborvitae hybrid cultivar that is often promoted as a disease-free substitute for Leyland cypress, particularly in the southeastern U.S. Trees may grow to 50 ft. tall with a dense, narrow, pyramidal habit, but can be easily kept more compact by pruning for screens or hedges. In the proper environment, trees can add up to 3-4′ of growth per year. Horizontal to slightly upright branching with sprays of scale-like dark green foliage. Foliage does not yellow in winter. Small, upright, light brown seed cones (to 1/2″ long). Green Giant can be kept smaller by periodic leader removal.
Best grown in moist, fertile, well-drained soils in full sun to part shade. Tolerates somewhat wide range of soils and some dry conditions. Best in full sun, but generally appreciates some light afternoon shade in hot summer climates. For screens, plant trees 7-10′ apart. Plant trees further apart for other uses.
| Common Name | 'Green Giant', Arborvitae |
|---|---|
| Botanical Name | Thuja 'Green Giant' |
| Container/Amount | 7 gallon |
| Evergreen or Deciduous | Evergreen |
| Hardiness Zone | 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b |
| Growth Rate | Fast |
| Light Requirements | Part-shade, Part-sun, Sun |
| Height | 40 to 60 ft. |
| Width | 12 to 18 ft. |
| Soil Condition | Well-drained |
| Water Needs | Average |
| Fragrance | No |
| Foliage Color | green |
| Deer Resistant | Yes |
