Winter foliage remains green in light to moderate shade, turning purplish-brown in full sun. Microbiota is much more shade tolerant than the low-growing junipers and, like them, forms a beautiful ground cover. The soil should be well drained. This is a hybrid between Thuja standishii and T. plicata . It forms a large evergreen, attaining heights of 30-50', with a relatively narrow spread.
Foliage is dark green all year round.
It grows exceptionally fast, as fast as 3-5' per year when young, slowing somewhat as it ages. Green Giant will thrive in soils ranging from sandy to heavy clay. Grows best in full sun but will tolerate some shade. It is very salt tolerant and deer-resistant and is a perfect plant for large screening or hedging material. This hemlock is reported to be resistant to the hemlock woolly adelgid.