Green Giant

Thuja plicata 'Green Giant'

Green Giant is grown for its foliage rather than flowers, giving the garden structure and color all season long.

Bloom time

Foliage plant

Hardiness

Zones 5–8

Sun

Full sun

Water

Moderate water

Mature size

39 ft × 13 ft

Type

Conifer

Verification

Core facts checked

Mature size, hardiness zones, sun and the trait tags were checked against named botanical sources for this plant. The bloom months and water need on this page were not.

Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 5–8. Expect it to reach about 39 ft tall and 13 ft wide at maturity, in roughly 15 years.

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When to plant Green Giant

Plant Green Giant in spring once the soil is workable, or by very early fall at the latest: an evergreen needs its roots down well before the ground freezes. For the middle of its hardy zones 5 to 8 range, that is March to May, or August on the fall side.

Month-by-month timing for your zone is on the planting calendar: for the middle of its range, start with zone 6 in March.

One of 10 in the Arborvitae family. Same plant, same care.