Douglas Fir timber dries well and has extremely high dimensional stability when dried. I t is possible that the tallest tree of the world up to the end of the 19th century was coast Douglas fir – in 1897 there was cut reportedly 142 m tall fir in Loup’s Ranch, Washington state (4). Endgrain: Small to medium sized resin canals, infrequent and variable in distribution; solitary or in tangential groups of several; earlywood to latewood transition abrupt, color contrast high; tracheid diameter medium-large. Hardy to -40°F Maximum Elevation: 8,500 ft. East of the Cascades, Douglas fir typically grows to a mature height of 125’. The following table provides the approximate weight (dead load, self-weight) per linear foot of the various sizes of dimensional lumber (also called “structural lumber” or “finished lumber”) used in building construction in the US. Get two Douglas firs for the price of one, at The Hermitage woodland, near Dunkeld. It could be pitch. See the articles Wood Allergies and Toxicity and Wood Dust Safety for more information. But if 100% of all the slats are all the same color, and none have a hint of the reddish color, that might be an indicator that it is a different species. Therefore a linear foot of a 6x6x12 is 1/4 of 34 lbs or 8 1/2 lbs per foot . Does anyone know what is happening if my unfinished Fir wood gets speckles on it over time? It is used in general and unusual purposes such as beams and plywood. We mill trees with 10 years to 1 inch of growth and they are hard and strong. I honestly in retrospect don’t trust the company I bought from have had a hard time even getting the order…:>). Diameter: > 11 1/2 feet (Coos County, Oregon) Height: 330 feet (Little Rock, Washington) burning anything green or half green is bad for anyone and bad for the chimney (creosote). The Douglas Fir is globally acclaimed for its exceptional strength-to-weight ratio. Douglas fir is named after Scottish botanist David Douglas. The Douglas fir (Pseudotsuga menisci) is an ornamental tree that is also widely utilized as a Christmas tree. How can I tell if the bed is all douglas fir…can douglas fir look whitish like pine? The tree itself grows to be very large, and yields a large amount of usable lumber and veneer for plywood. I didn’t connect it soon enough to stop the effects of the difficulty to breathing and the couphing, until after a couple of days. Copyright © 2008-2020 Eric Meier | All Rights Reserved, https://www.urbandexterous.com/characteristics-of-douglas-fir-wood/. What’s the best way to treat this? I have read here https://www.urbandexterous.com/characteristics-of-douglas-fir-wood/ that it offers good struggle to splitting which makes it a good lateral holder of drilled objects. Head to the Duke of Buccleuch’s Drumlanrig Estate and feast your eyes on one of the original firs David Douglas introduced back in 1827. Often found in pure stands, Douglas fir can attain an average mature height of about 300' and diameters from 10' to 17'. More information about the coast Douglas-fir (Pseudotsuga menziesii). It grows across a larger portion of western North America, from 19 to 55 degrees North in latitude, than any other commercially used conifer. The needle… Accepts stains, glues, and finishes well. Douglas fir is very easy to stain but difficult to paint, with priming coats being rapidly absorbed. Trees with multiple trunks are excluded. However, it exhibits considerable morphological plasticity, and on drier sites P. menziesii var. I suppose it could be some sort of mold or fungus growth, hard to say for sure without seeing it. The tallest known Douglas-fir (Pseudotsuga menziesii) is the Brummit Fir (located in Coos County, Oregon), which reaches the height 328 feet. menziesii will generate deeper taproots. 1 The impressive Dughall Mor - Gaelic for 'big dark stranger' in Gaelic - held the record from 2005 until 2014 when it was overtaken by an even taller neighbour measuring 66.4m. One of my friends that owns a piece of mine showed me a picture of it with all these little speckles and are wondering if it’s mold. These results stem from a study undertaken as part of the lSummerfield, Edward . There are two geographical varieties of Douglasfir: the Coast Douglasfir (Pseudotsuga menziesii var. I’m jealous of these westerners and their perfect softwood…. in Oregon, 99.76 m tall.. We look forward to welcoming you safely to our forests and land. Fir sapwood predominates through tree age 20 after which the proportion of heartwood increases. I noticed some of the larger pieces have the reddish look like those here, but some of the smaller(the slats) are more white in color, maybe like pine. We grafted shoot tips across different ages and sizes of Douglas-fir (Pseudotsuga menziesii (Mirb.) Grain/Texture: Grain is generally straight, or slightly wavy. Many people are unaware that Douglas Fir is a Softwood and will mark / dent easily..it also has a tendency to split and crack. Consider how a round log is converted into rectangular lumber. Common Uses: Veneer, plywood, and structural/construction lumber. At maturity trees can grow to 30’ wide. Color/Appearance: Can vary in color based upon age and location of tree. It has a consistent density that allows for measurable span tables. Likes full sun and relatively dry locations. Douglas-fir is one of the world's most important and valuable timber trees. Sustainability: This wood species is not listed in the CITES Appendices, and is reported by the IUCN as being a species of least concern. The equation forms used for Douglas-fir by the above investigators were examined in this study. One of the trees is amongst the tallest in the UK, standing at 59 … Rot Resistance: Douglas-Fir heartwood is rated to be moderately durable in regard to decay, but is susceptible to insect attack. Douglas-fir records . I had to take my oldest, Cash, to the Vet and he had to go on medication. The tree itself grows very large and yields a large amount of commercial timber. I bought a heavy duty bunk bad which is supposed to be douglas fir. The Douglas-Fir is sometimes used in commercial landscape designs, but is too big of a tree for residential landscaping. Thanks for the information. Douglas fir (Pseudotsuga menziesii) grows in U.S. Department of Agriculture hardiness zones 4 to 6 and is the official state tree of Oregon. If in a wood stove, consider checking your stove and pipes for leaks. glauca exhibits even greater plasticity, occurring in stands of interior temperate rainforest in British Columbia, as well as at the edge of semi-arid sagebrush steppe throughout much of its range, where it generates even deeper taproots than coast Douglas-fir is capable. Kerrisdale Elementary School has a few large Douglas-fir up to 44.4m in height (shown here), but what is more interesting is the this area’s historical big trees. Douglas Fir sapwood is whitish like pine. Research suggests Douglas fir could grow to a maximum height of between 430 to 476 feet (131 to 145 m), at which point water supply would fail. Is it true? The wood is very stiff and strong for its weight, and is also among the hardest and heaviest softwoods commercially available in North America. We also use non-essential cookies to help us improve our website. Crushing Strength: 6,950 lb f /in 2 (47.9 MPa) Shrinkage: Radial: 4.5%, Tangential: 7.3%, Volumetric: 11.6%, T/R Ratio: 1.6. Of course this inventory contains only tree records as far as they are registered on this site. They give height and all-year structure and make great accents and lawn specimens. Douglas-fir (Pseudotsuga menziesii) ranks as the second tallest tree species in the world behind coastal redwood (Sequoia sempervirens), and contains the largest trees in the entire Pinaceae family. Comments: Named after Scottish botanist David Douglas, (though the scientific name is in honor of Archibald Menzies, who first described the tree in the 1790s). A Douglas-fir is the third tallest tree in the world (or second, depending on other accounts), and some believe a Douglas-fir could be, or once was, the tallest. The wood is very stiff and strong for its weight and is among the hardest and heaviest softwoods. Color/Appearance: Can vary in color based upon age and location of tree. Head to the Duke of Buccleuch’s Drumlanrig Estate and feast your eyes on one of the original firs David Douglas introduced back in 1827. One of the trees is amongst the tallest in the UK, standing at 59 metres, while the other which resides next to nearby Dunkeld Cathedral boasts a girth of seven metres. In my experience, density matters. Its trunk is tall and ramrod straight, and the tree presents a slender, columnar or pyramidal shape. per cubic foot, that is 1 ft x 1ft x1f . Observed tree heights are used in the top height computation when they are available; otherwise heights come of trees which are Douglas fir; in a mixed-species stand, fewer than 40 tpa may be used. An "average" weightof a board foot of Douglas-fir, which is not one specific tree butone of about a dozen different trees, is about 2.8 to 2.9 poundsper board foot. Tree Size: 200-250 ft (60-75 m) tall, 5-6 ft (1.5-2 m) trunk diameter, Average Dried Weight: 32 lbs/ft3 (510 kg/m3), Specific Gravity (Basic, 12% MC): .45, .51, Modulus of Rupture: 12,500 lbf/in2 (86.2 MPa), Elastic Modulus: 1,765,000 lbf/in2 (12.17 GPa), Crushing Strength: 6,950 lbf/in2 (47.9 MPa), Shrinkage: Radial: 4.5%, Tangential: 7.3%, Volumetric: 11.6%, T/R Ratio: 1.6. The classical conical shape of a needle-leaf evergreen gives dignity and character to your house and the Douglas Fir is a wonderful choice for gardeners in cooler areas, since it will grow from zone 4 to zone 6, throughout the northern part of the country. In the U.S., Douglas fir (Pseudotsuga menziesii) naturally ranges from the Mexican border north to Alaska, and from the Pacific coast east to the Rocky Mountains. Extraordinarily strong in relation to its weight, Douglas Fir bends well and is resistant to shearing under compression. R. Site index and height growth of Douglas­ fir and ponderosa pine in eastern . 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