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Atlantic White Cypress

Chamaecyparis thyoides

Last reviewed: September 2026

Chamaecyparis thyoides is an evergreen conifer with soft, scale-like foliage that grows in coastal swamps, bogs, and wet lowland forests from New England to the Gulf Coast. It tolerates saturated soil and part sun, making it a good fit for wet, low-lying landscapes.

Atlantic White Cypress (Chamaecyparis thyoides)
Photo: (c) Douglas Goldman, some rights reserved (CC BY-SA)

Toxicity unknown

Atlantic White Cypress (Chamaecyparis thyoides) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

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

AL, CT, DE, FL and 12 more states

Before you buy

Your city may pay you to plant this

Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 452 programs across 44 states, each with a link to the provider and the date we last checked it.

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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

How much sun does Atlantic White Cypress need?
It grows best with part sun to full sun, though young trees in swampy stands often establish in part shade before reaching the canopy.
How much water does Atlantic White Cypress require?
It needs consistently wet to saturated soil and is commonly found in swamps, bogs, and seasonally flooded wetlands, so it does not tolerate dry sites well.
Does Atlantic White Cypress produce showy flowers?
No. As a conifer it produces small, inconspicuous pollen and seed cones rather than flowers, and it does not rely on insect pollinators.
What does the foliage look like through the seasons?
The scale-like evergreen leaves stay green through most of the year but can take on a bronze or dull green cast in winter, especially in colder parts of its range.
What kind of landscape or habitat suits this tree?
It performs well in wet, low-lying areas such as pond edges, rain gardens, and boggy sites, mirroring the swamp and wetland forest conditions where it naturally thrives.
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.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

See all plant problem guides

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