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White Cedar, Eastern Arborvitae, American Arborvitae
Thuja occidentalis 'DeGroots Spire'

Family: Cupressaceae (koo-press-AY-see-ee) (Info)
Genus: Thuja (THOO-yuh) (Info)
Species: occidentalis (ok-sih-den-TAY-liss) (Info)
Cultivar: DeGroots Spire





6-8 ft. (1.8-2.4 m)

8-10 ft. (2.4-3 m)


18-24 in. (45-60 cm)

24-36 in. (60-90 cm)


USDA Zone 2a: to -45.5 C (-50 F)

USDA Zone 2b: to -42.7 C (-45 F)

USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:

Full Sun



Bloom Color:



Bloom Time:

Late Winter/Early Spring


Grown for foliage


Other details:

This plant is attractive to bees, butterflies and/or birds

Average Water Needs; Water regularly; do not overwater

Provides winter interest

Soil pH requirements:

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

From seed; sow indoors before last frost

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds


This plant has been said to grow in the following regions:

Chelsea, Alabama

Ashkum, Illinois

Champaign, Illinois

Park Ridge, Illinois

Louisville, Kentucky

Taylorsville, Kentucky

Roslindale, Massachusetts

North Lewisburg, Ohio

Amelia Court House, Virginia

show all

Gardeners' Notes:


On Mar 12, 2014, coriaceous from ROSLINDALE, MA wrote:

This is the narrowest columnar evergreen I know. It's the only one I know that's hardy in Boston (Z6a) and narrow enough to pass for an Italian cypress (Cupressus sempervirens) at first glance.

This is slower growing than most other arborvitae. Its foliage has a different texture, and it seems to shed snow and ice better. I'd still tie up multitrunked specimens for the winter.

Under good conditions, it can still grow a foot per year, and it doesn't suddenly stop growing when it gets tall. It can easily get 25' tall.


On Nov 25, 2013, sladeofsky from Louisville, KY (Zone 6b) wrote:

The slow compact growth of 'Degroot's Spire' means that the plants are much more stout and less likely to bend than most thujas, which are generally lax and prone to heading over in wind and wet.


On Apr 1, 2007, greenobsessed from Champaign, IL (Zone 5a) wrote:

mine are on thier 2nd year in full sun and lots of wind and totally beautiful. no wind burn or die back.slow growing and inch or 2 per year