Cypress (Taxodium distichum)

Cypress (Taxodium distichum)

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Common Name(s): Cypress, Baldcypress

Scientific Name: Taxodium distichum

Distribution: Southeastern United States

Tree Size: 80-120 ft (24-37 m) tall, 3-5 ft (1-1.5 m) trunk diameter

Average Dried Weight: 32 lbs/ft3 (515 kg/m3)

Specific Gravity (Basic, 12% MC): .42, .51

Janka Hardness: 510 lbf (2,270 N)

Modulus of Rupture: 10,600 lbf/in2 (73.1 MPa)

Elastic Modulus: 1,440,000 lbf/in2 (9.93 GPa)

Crushing Strength: 6,360 lbf/in2 (43.9 MPa)

Shrinkage: Radial: 3.8%, Tangential: 6.2%, Volumetric: 10.5%, T/R Ratio: 1.6

Color/Appearance: Color tends to be a light, yellowish brown. Sapwood is nearly white. Some boards can have scattered pockets of darker wood that have been attacked by fungi, which is sometimes called pecky cypress.

Grain/Texture: Straight grain and medium texture to coarse texture. Raw, unfinished wood surfaces have a greasy feel.

Endgrain: Resin canals absent; earlywood to latewood transition abrupt, color contrast medium; tracheid diameter large to very large.

Rot Resistance: Old-growth Cypress is rated as being durable to very durable in regards to decay resistance, while wood from younger trees is only rated as moderately durable.

Workability: Sharp cutters and light passes are recommended when working with Cypress to avoid tearout. Also, the wood has been reported by some sources to have a moderate dulling effect on cutting edges. Cypress has good gluing,  nailing, finishing, and paint-holding properties.

Odor: Cypress has a distinct, somewhat sour odor while being worked.

Allergies/Toxicity: Although severe reactions are quite uncommon, Cypress has been reported as a sensitizer. Usually most common reactions simply include respiratory irritation. See the articles Wood Allergies and Toxicity and Wood Dust Safety for more information.

Pricing/Availability: Prices ought to be in the mid-range for domestic woods, with clear, knot-free boards for woodworking applications costing more than construction-grade lumber.

Sustainability: This wood species is not listed in the CITES Appendices, and is reported by the IUCN as being a species of least concern.

Common Uses: Exterior construction, docks, boatbuilding, interior trim, and veneer.

Comments: Baldcypress is the state tree of Louisiana, and is an icon of southern swamplands. So named because the trees are deciduous (unlike most conifers), and have the peculiar trait of dropping all their needle-like leaves each the winter.

The trees also develop unique aerial roots that protrude above the ground (or water) and are especially seen on trees growing in swamps. These structures are known as knees, and are sometimes harvested  on a small scale and sold for woodcarving purposes (see picture below).

Although not technically a cypress in the strictest sense (Cupressus genus), Baldcypress is in the Cupressaceæ family, which includes many decay resistant woods (including cedars), and the wood is a popular choice in exterior construction applications where decay resistance is needed. 

Related Species:

None available.

Scans/Pictures:

Cypress (Taxodium distichum)

Cypress (sanded)

Cypress (sealed)

Cypress (sealed)

Cypress (endgrain)

Cypress (endgrain)

Cypress (endgrain 10x)

Cypress (endgrain 10x)

Cypress (foliage)

Cypress (foliage)

Cypress (knee)

Cypress (knee)

  • Lampros

    this type is very common in greece, durability is very good if there is any contact with huminidy or water, if it does in sort time it gets infected by worms/insects.
    i have replace pieces in old houses that they were hard as iron,but they were also well protected by huminidy.

    • John Darst

      What’s old cypress siding worth?

  • Pablo

    I am down in South Georgia where the cypress are quite abundant. Knowing the wood is light weight,rot resistant,and easy to carve, I thought it might make good material for making drinking cups and wooden bowls and plates. I checked you database for toxicity levels but it doesn’t say anything about drinking cups and such. Do you know if it is safe for drink and food?

    • Kurt Barensfeld

      Cypress is the woods used exclusively in NYC water towers.

  • I think most instances of allergic reactions occurred when breathing the sawdust. But with that being said, I don’t know about drinking liquids out of it — seems a bit much for the wood unless it’s finished in a food-safe epoxy, but I don’t have much experience in this area.

  • Pablo

    Thank you sir for the information.

  • david

    i am making “the mother of all wedding benches” for my daughter out of a 30 yr old tree that a neighbor had to take down. i am very surprised that it is so light, having been making tables and such from pecan and mesquite and osage orange. just seems to me a very light wood would rot faster, but what do i know? ;-)

    the bench is 4-1/2″ thick, 15″ wide,6′ long, live edge. the legs are 1/4 vertical slices off the bottom 3′ of the trunk – which was too large for my friend to mill with his bandsaw mill – so they are about 6″ thick at top and 18″ at bottom – natural flare of the trunk to root transition. the back is a “first slice” off the trunk at a higher location, about 10″ wide, flat on the milled side with the rounded live edge to the back. hopefully that makes sense.

    this will be likely placed on a covered porch, some windblown rain possible but no direct weather exposure – in central Texas.

    now i am leaning toward a marine Penofin oil, several coats – like 5-8, then my daughter can add a coat once or twice a year to maintain it.

    thoughts?

  • Gregory Monroe

    I have found that quartersawn old growth bald cypress sapwood makes excellent instrument soundboards, particularly for acoustic guitars & ukuleles. The “tap tone” is pleasantly mellow and not overly bright. Very comparable to Alaskan Yellow Cedar but much cheaper.

  • giles nowak’s mustache

    Related tree is the Red Wood. I came across a source in a bookstore once that gave the height of the “Bald Cypress” as being up too 300 ft. (most texts list in in the mid to upper 100 ft range). The explanation of this one source was that it rarely gets to these heights anymore, but in earlier centuries old growth of the tree was much higher.

    The tree is BEAUTIFUL. Graceful & willowy, the slightest breezes stir the branch-lets into slow dancing ripples of movement

  • Donna

    What are your thoughts on using rough cut cypress to replace a floor in a horse/stock trailer?

    • ejmeier

      Don’t really have too much experience with horse trailers. The wood is rather soft, so not sure how it would hold up to the weight and wear, but at least it’s probably not for aesthetic purposes, so it may not be an issue that it is dented, etc.