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Wasowski, Sally and Andy
Chamaecyparis thyoides (L.) Britton, Sterns & Poggenb.
Atlantic white cedar, Atlantic white-cedar
Synonym(s): Chamaecyparis henryae, Chamaecyparis thyoides var. henryae, Cupressus thyoides, Cupressus thyoides ssp. henryae
USDA Symbol: CHTH2
USDA Native Status: L48 (N)
Evergreen, aromatic tree with narrow, pointed, spirelike crown and slender, horizontal branches. Atlantic white-cedar is a columnar, evergreen tree, 40-75 ft. high, (often taller in the wild), with short, ascending branches and blue-green, scale-like leaves on twigs spreading in a fan-like manner. At maturity, the trunk is devoid of branches for 3/4 of its length. Bark is ashy-gray to reddish-brown.
Ancient logs buried in swamps have been mined and found to be well preserved and suitable for lumber. Pioneers prized the durable wood for log cabins, including floors and shingles. During the Revolutionary War, the wood produced charcoal for gunpowder. One fine forest is preserved at Green Bank State Forest in southern New Jersey. As an ornamental, this species is the hardiest of its genus northward.
Plant CharacteristicsDuration: Perennial Habit: Tree Leaf:
Bluish Size Class:
Bloom InformationBloom Color: Green
Bloom Time: Mar , Apr , May
, VA Native Distribution:
Coastal Plain from s. ME
& MS Native Habitat:
Swamps & bogs, chiefly on coastal plain but extending inland to scattered localities
Growing ConditionsWater Use: Low
Light Requirement: Part Shade
Soil Moisture: Wet
CaCO3 Tolerance: None
Soil Description: Moist, sandy soil.
Conditions Comments: This species thrives in a cool, moist atmosphere where it is protected from drying winds. It is relatively free of serious disease or insect problems and not susceptible to apple-cedar rust. It does not compete with hardwood species.
PropagationDescription: Seed germination is usually low, due in part to poor seed quality, and also to embryo dormancy. Softwood or semi-hardwood cuttings are the principal means of propagation.
Seed Collection: Cones mature in Sept. and Oct. at the end of the first growing season. Each cone scale bears from 1-5 winged seeds.
Seed Treatment: Warm-moist stratify for 30 days then stratify 30 more days at 40 degrees. A cool-moist stratification alone may improve germination also.
Commercially Avail: yes
National Wetland Indicator Status
|Status:|| OBL || OBL || OBL |
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Delaware Nature Society
- Hockessin, DECrosby Arboretum
- Picayune, MSMt. Cuba Center
- Hockessin, DE
Record Last Modified: 2007-12-23
Research By: TWC Staff