Atlantic White Cypress
Chamaecyparis thyoides
Last reviewed: June 2026
Chamaecyparis thyoides (Atlantic White Cypress) is an evergreen coniferous tree native to wetlands along the Atlantic coast from Maine to Georgia. This slow-growing species thrives in acidic, poorly drained soils of swamps and bogs.
The USDA PLANTS Database (opens in new tab) does not flag Atlantic White Cypress as toxic to livestock.
Light
part sun
Water
high
Size
300"–900" H × 180"–360" W
Bloom
N/A
Native to
RI
Atlantic white cypress is a tall, narrow evergreen tree native to wetlands and coastal areas. It develops a distinctive conical shape with fine, scale-like foliage that remains attractive year-round. This slow-growing tree thrives in moist to wet soils and can tolerate some salt spray.
Growing Atlantic White Cypress
Grow Atlantic White Cypress in part sun and high water. Mature plants reach 300 to 900 inches tall and spread 180 to 360 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Atlantic White Cypress is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, mid zone, street edge.
- Extremely large mature size may overwhelm smaller properties
- Requires consistent moisture which may need irrigation
Wildlife value
This native cypress provides nesting sites and shelter for birds, particularly in winter when its dense evergreen foliage offers protection. The small cones provide seeds for various songbirds and small mammals.
Common questions
- Where does Atlantic White Cypress naturally grow?
- Atlantic White Cypress is native to coastal plain wetlands from Maine south to northern Florida and west to Mississippi, typically found in acidic swamps, bogs, and poorly drained sandy soils.
- What growing conditions does Chamaecyparis thyoides prefer?
- This species prefers full sun to partial shade and consistently moist to wet, acidic soils with poor drainage. It is well-adapted to swampy conditions and can tolerate periodic flooding.
- How large does Atlantic White Cypress grow?
- Atlantic White Cypress typically reaches 40-50 feet tall with a narrow, conical crown, though it can occasionally grow up to 80 feet in optimal conditions. It has a relatively slow growth rate.
- Is Atlantic White Cypress toxic to livestock?
- The USDA PLANTS Database does not flag Atlantic White Cypress as toxic to livestock.
- Is Atlantic White Cypress HOA-friendly?
- Atlantic White Cypress is generally an HOA-friendly choice in the right placement, with low maintenance.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Atlantic White Cypress? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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