douglas fir characteristics
Physical description. If you live in zones 4 to 6, this could be the evergreen tree for you. are stiff with protruding three-pronged leaf-like bracts that wrap back over the next Douglas firs are conifers, which means they produce seeds in cones rather than in flowers. Soils: Grows on a wide variety of soils, but develops best on clay loams, silty clay loams, Learn tips for creating your most beautiful (and bountiful) garden ever. Utah State University is an affirmative action/equal opportunity institution. Odor: Has a distinct, resinous odor when being worked. Characteristics. Stems: Twigs are slender, orange-brown, and covered with short silky hairs. Today, Douglas fir is one of the world’s most economically important timber trees due to its quick growth as well as the versatility and … There are quite a few pests and diseases that may potentially affect your Douglas fir, but you usually shouldn't have major problems. Medium texture, with a weight of 540 kg per cubic metre, and a high density, specific gravity and strengthto- weight ratio. Fruits/Seeds:  Seeds are small, thin-shelled nuts, about ¼ inch long with terminal wings that averages Readily available. generally in a belt above ponderosa pine and below Englemann spruce and subalpine Medium texture, with a weight of 540 kg per cubic metre, and a high density, specific gravity and strengthto- weight ratio. It dries straight and true. Its range is from northern Vancouver Island south to the Santa Cruz Mountains west of the San Francisco Bay region. Very stiff, with high strength values in bending, tension, horizontal sheer and compression. Buds are slender, about ¼ inch long, non-resinous, sharp pointed, and reddish-brown. Male cones are The average size of this tree in Utah is 130 feet tall, and 36 inches in diameter. timbers, and plywood. New Zealand Douglas-fir offers environmental, sustainable and superior solutions to the majority of building and construction requirements. Strength, stability and stiffness are vital requirements of superior construction timber to meet common durability needs. The bark surface is smooth Pseudotsuga menziesii var. It is used extensively for Christmas The average size of this tree in Utah is 130 Pseudotsuga menziesii var. menziesii will generate deeper taproots. High shrinkage when seasoned from a green state, but minimal shrinkage and swelling once seasoned. are an important food source for birds and small mammals. Oregon chose this as its state tree. The seeds have a single wing and are dispersed by wind. This tall conifer can reach heights of anywhere from 40 feet to over 300 feet tall, but there are smaller varieties available for the home landscape. Growth Characteristics: Douglas fir is a medium-sized evergreen tree with a short pyramidal symmetrical crown As it grows, the Douglas fir forms into a pyramidal shape.​. 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. The name is a bit misleading, as this does not belong to the fir genus (Abies). Besides Douglas fir, other possible names include Doug-fir, false spruce, red fir, Oregon pine, Douglas pine, yellow fir, and Douglas spruce. The needles (leaves) are The ideal soil for this tree is an acidic loam that drains. Pseudotsuga menziesii var. Winter buds are brown, shiny, and pointed. © 2017 Utah State University Extension. You can work on making your soil more acidic. Others are cedars, the deciduous conifers (Glyptostrobus, Larix, Metasequoia, Pseudolarix, and Taxodium), fir trees, pine trees, and spruce trees. Bark is variable, being very thin on young trunks to as much as 6 inches thick on old mature trunks. Its strength, straightness and ease of fabrication make it the perfect high performance timber for structural uses, such as metal plate-connected trusses, framing, bridges and large heavy members. The leaves are commonly bluish-green being very thin on young trunks to as much as 6 inches thick on old mature trunks. Click here for instructions on how to enable JavaScript in your browser. High shrinkage when seasoned from a green state, but minimal shrinkage and swelling once seasoned. East of the Cascades, Douglas fir typically grows to a mature height of 125’. Bears eat the sap of these trees. menziesii is the coast Douglas fir. numerous, very small, and orange-red in color. Bending stiffness and strength comparison with radiata pine. in color. The Douglas fir must have full sun wherever you plant it. on young stems and deeply furrowed between rough gray-brown ridges when mature. The wood is also used for railroad ties, mine timbers, house menziesii is the coast Douglas fir. trees. A WEB PROPERTY OF SOZO FIRM INC, Have questions about wood types or particular applications for wood varieties? Morphology: As a Northwest evergreen, this tree can grow to a prodigious height of over 250’ on undisturbed woodland sites. Leaves: Needle-like, but flat, flexible, and without sharp tips. Pseudotsuga menziesii var. At maturity trees can grow to 30’ wide. It is excellent quality Rot Resistance: Douglas-Fir heartwood is rated to be moderately durable in regard to decay, but is susceptible to insect attack. The lumber has a distinctly orange hue, due to the combination of the earlywood’s yellow color and the more mature wood’s reddish cast. In each of these areas Douglas-fir stands out as a top performer as well as offering natural moisture resistance and treated or un-treated building options. Accepts stains, glues, and finishes well. Moderately durable. Douglas fir is most commonly found on cool, moist, north facing slopes or canyon walls. The wood is used widely as dimensional lumber, Identifiable characteristics . Douglas-fir prefers acidic or neutral soils. Very stiff, with high strength values in bending, tension, horizontal sheer and compression. The shape is classified as pyramidal with a somewhat open stature. wood is light tan to reddish in color, soft, and fine-grained. Woody cone scales Douglas fir is unusual among softwoods in that it retains its size and shape as it seasons. Feel free to submit your question by. logs, post and poles, fencing, and firewood. at the top of a clear straight trunk. eaten by blue grouse and spruce grouse. The wood has a slight rosy cast; the sapwood generally a light straw color and the heartwood a deep russet brown. Its appearance is prized for joinery, panelling, cabinets, flooring, windows and cladding. Douglas-fir is a large tree, reaching 85 metres on the West Coast and 42 metres in the Interior. When mature, the cones are 2 - 4 inches long and brown in color. In each of these areas Douglas-fir stands out as a top performer as well as offering natural moisture resistance and treated or un-treated building options. Description Douglas-fir is one of the world's most important and valuable timber trees. length, attached to the twig by short, twisted petioles. Douglas fir is an important and valuable timber tree, accounting for nearly ¼ of the Many people choose the Douglas fir as their Christmas tree each year. Douglas fir habitat, particularly areas containing the coast Douglas fir variety, is one of the most productive forest types in the world. The 8 Best Places to Buy a Christmas Tree in 2020, The 7 Best Christmas Tree Delivery Services of 2020, Flammable Plants to Avoid Having in Your Garden, Creating Four Season Interest With Dwarf Evergreens, National Tree Company Downswept Douglas Fir Christmas Tree Review, How to Grow and Maintain a Bird's Nest Spruce, Causes of Bare or Dead Branches on Colorado Blue Spruce Trees. Resin blisters are common on young poles and saplings. Each yellow- or blue-green needle is borne singly and has a short stalk at the base and a grooved upper surface. The Douglas fir is not a true fir tree. Besides Douglas fir, other possible names include Doug-fir, false spruce, red fir, Oregon pine, Douglas pine, yellow fir, and Douglas spruce. Introducing "One Thing": A New Video Series, The Spruce Gardening & Plant Care Review Board, The Spruce Renovations and Repair Review Board. In New Zealand’s harsh environment builders and homeowners alike must be assured that their homes and places of business are resistant to all that the elements may deliver. Douglas fir seeds provide food for a number of small mammals, including chipmunks, mice, shrews, and red squirrels. Associated Species: Ponderosa pine, lodgepole pine, limber pine, Englemann spruce, Aspen, and blue spruce. Douglas fir provides cover and habitat for both wildlife and livestock. Pseudotsuga menziesii var. It is shade tolerant and often found replacing or "growing up through" aspen Stems: Twigs are slender, orange-brown, and covered with short silky hairs. Another characteristic that makes Douglas Fir so attractive to the timber framing industry is its unique appearance. season, appear at first as purplish or red-green clusters of three-pronged leafy bracts. They include: Vanessa Richins Myers is a seasoned horticulturist, garden writer and educator with 10+ years of experience in the horticulture and gardening space. Workability: Typically machines well, but has a moderate blunting effect on cutters. Give Furniture an Antique Look With Pickling, Key Differences Between Cherry And Mahogany, Domestic Species Focus: Western Red Cedar Wood, Domestic Species Focus: Alaskan Yellow Cedar, The Continual Flooring Trend: Real Hardwood Flooring, Make a Dramatic Statement with Light or Dark Wood Floors. stands. ¾ inch in length. However, it exhibits considerable morphological plasticity, and on drier sites P. menziesii var. The benefits of natural products in general and wood in particular, are often taken as a given however the astute engineer, architect and builder understands the variables in performance and application that exist across the many timber options available. The The genus name (Pseudotsuga) suggests that this is similar to hemlock trees. Flowers/Inflorescence: The male and female cones are separate, often found on the same twig. Douglas fir trees have long, flat, spirally arranged needles that grow directly from the branch and completely surround it. Growth Characteristics: Douglas fir is a medium-sized evergreen tree with a short pyramidal symmetrical crown at the top of a clear straight trunk.

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