Well, to narrow it down a bit, the three most popular varieties of Christmas tree are fir, spruce, and pine. Because of its similarity to other genera, Douglas-fir has given botanists fits. Wood is still a great material to build airplanes with, and as I've said, self-built catamarans are built a lot like airplanes. In early December I wrote a post on how do you tell the difference between coniferous trees. Blue spruce remains a popular Christmas tree because of its bright blue color. This is the species in Trafalgar Square in London every year. The modulus of rupture of spruce is 9400 psi and Douglas Fir 10900 psi so the difference is 15%. have four sided needles that attach to a small peg on the branch. It is the traditional Christmas tree. Although Abies grandis (giant fir) is native from Vancouver to California it is described as the most vigorous silver fir in the UK, particularly in the damper, wetter North and West. Cones have a sort of curve shape to them. That means that they both reproduce by making cones, not flowers. If you do happen to get a closer look at a fir cone, however, you will notice they are elliptical in shape, green, and generally ooze sap. This is your assurance that the panels purchased meet or exceed performance requirements. Occasionally the Norway needles seems a little more flat than angled. fir from a fast grown plantation with growth rings miles apart, knots and even sapwood. Perhaps this is down to practice. It has, at various times, been called a pine, a spruce, a hemlock, and a true fir. See the Hankinson formula. Picking the perfect fir can be a lot of fun, as long as you know what you're looking for. The oil is steam distilled from the needles. In this post I am going to look at fir and spruce (Picea sp.) Diploma in Aromatherapy & Essential Oil Science Back to list of tree species. Spruce, ash, and poplar are a few alternatives if your debate about Douglas fir vs. pine isn’t shaping up the way you want. You are likely to find them fallen on the ground. I still don't know who to trust and who - well - have opinions. Useful for nervous exhaustion. Comparing spruce vs. pine vs. fir wood helps you decide which wood to use based on your project. Those on a fir are upright. It can grow quite well in Scotland but is rarer in drier areas south of the UK. Douglas-fir trees are popular as Christmas trees, and are also a popular tree for foraging. Spruce. Spruce and fir have their needles attached individually to the branches using different attachments called pegs, suction cups, and stalks, which are never bundled. Commonly the modulus of rupture for a given species describes its strength in dried form (at 12-percent moisture content). Knowing the Douglas fir trees have thick bark to … But the tiny mice were too small and slow to outrun the fire. (firs). Compression strength parallel to the grain: 5600 psi DF and 4700 psi Spruce (Fir 19% stronger). Note that due to inadequacies of samples, these values may not necessarily represent average characteristics .Tree SpeciesAverage Specific Gravity, Oven Dry SampleStatic Bending Modulus of Elasticity (E)Impact Bending, Height of Drop Causing FailureCompress. New STK Doug Fir in Stock. Woodworkers prefer knotty pine for making tables, chests or any other project because pine has the beauty that fir lacks. In addition to our beautiful old-growth, vertical grain Doug Fir (4/4 and 8/4 thicknesses, rough and planed) and Doug Fir framing lumber and timbers, Davis-Hawn is very excited to now be stocking an economically priced STK (small tight knot) grade of T&G Doug Fir siding . The book describes them “an uncomfortable bunch”. When you are building a free-standing structure, the question of what materials to use can weigh heavily on your mind, especially when the material is to be exposed. Spruce vs. Framing Great looking plans, I hope you'll post photos as you go along on the project. Learn how your comment data is processed. On one particular day, all the animals were fleeing from a fire. This mostly outlined some of the similarities and differences between Tsuga sp. Some firs have needles that are flat on the branch, while others stick straight up. DeltaMan. 494 129 5. Post was not sent - check your email addresses! The scar can just be seen to left of the text on the twig. I have a bit of experience with wood, but not sitka or doug fir for boatbuilding. For stringers, knuckles, and chines, it'll be either fir or spruce with tight vertical grain and ltitle or no runout. Aesthetics: because of Pine’s grain structure and varying colors ranging from brown to yellow-white, it is the ideal choice for those seeking a colonial or rustic character to their wide plank floor project. There are also options like cedar, redwood, larch, oak, and hemlock. I think SPF is cheaper as a category than SYP. The exception to this is a Douglas Fir. The Blue Spruce is a tree that, as Leyden puts it, "has a really great shape." The Norway spruce (Picea abies) is the most common in Europe. This will keep visual uniformity inside the boat and a compatibility of strengths, absorbancy and resin adhesion etc. As I said, both of these trees are evergreen conifers. Douglas Fir on the other hand, features a tight, flowing grain pattern that resists warping and twisting. As the scientific name indicates, Douglas fir is not classified as a fir (Abies). Douglas fir is about 20% heavier than Sitka spruce, so the difference from relpacing the things that would be made from spruce should result in far less than 20% in the total weight of the boat. In 2016, the White House chose a Douglas fir to festoon the Obamas' final Christmas in the Executive Mansion, and for good reason: Douglas … Remember spruce has no petiole unlike the hemlocks. Sitka, a North American species, is commonly grown by the forestry commission in wet forests. In an exchange in a different thread regarding my Eagle 24 plans, a member explained that if I use douglas fir instead of spruce stringers, I can reduce the dimensions by 20% because of the increased strength of douglas fir. The cones on spruce trees are pendent i.e. Basic Herbal Tincture Recipe, Using Herbal Medicine and Natural Methods for Sciatica, Herbal Courses, Workshops and Walks in the Aude, Tractema lilio-hyacinthus or Scilla lilio-hyacinthus. The tree gets its name from David Douglas, a renowned Scottish botanist. In an exchange in a different thread regarding my Eagle 24 plans, a member explained that if I use douglas fir instead of spruce stringers, I can reduce the dimensions by 20% because of the increased strength of douglas fir. My little Collins book describes the Grecian fir as having almost perpendicular shiny green leaves all around the shoot “radiating stiffly”. In fact it can be a little yellow if it doesn’t get enough water. I definitely don’t know all of them. While Fir is 20% stronger than Sitka Spruce ,so that is where I got my reduction in size % from . The Collins book describes this a “delicious tangerine scent”. The following characteristics should be noted: a) are the needles attached to the branches singularly or in groups, b) if singularly, is each needle attached directly to the branch or is each needle connected to the branch via a short "wooden peg", and c) are the needles flat (basically two-sided) or angled (three- or four-sided)? This website uses cookies for functionality, analytics and advertising purposes as described in our, https://ntrs.nasa.gov/archive/nasa/casi ... 091129.pdf, https://ntrs.nasa.gov/archive/nasa/casi ... 091423.pdf, http://forum.woodenboat.com/showthread. Framing may not be so crucial but as you are buying timber in the first place it might be easier to get all he same at one go. They're reasonably priced, and I get to choose the boards I want to buy. This fir is more commonly known as the Grecian fir. Douglas fir, which has sometimes been called the Douglas tree, Oregon pine, and Douglas spruce, is not actually a true fir, a pine, or a spruce. To help me remember botanically, I use spiky spruce so I can relate to the uncomfortable bunch description. A forum for all those interested in Woods Designs boat designs. The essential oil or the resin are utilised medicinally. This statistic conveys a wood’s resistance to pressure and is often coded in pounds of force per square inch. How do you tell the difference between spruce and fir ? Norway are green with very faint white lines. They disintegrate on the tree so you will rarely find a cone on the ground unlike spruce or pine cones. Builders should trust the Designer ,ask them directly as you are doing. The Douglas fir, mentioned in the previous post, is second largest. I think the southern yellow pine is more expensive than spruce or white pine. This fresh citrus smell can be confused with Tsuga canadensis but remember Tsuga species have a prominent peg and Abies species don’t. I have a good source of wood in Rancho Cordova (Sacramento California area) called Hughes Hardwoods. Another good choice for budget-conscious consumers. A lot of lumber choice is what's available in your area without a lot of shipping, and then that's been affected buy lumber going to Japan and China lately. True cedars have short, stiff needles, while the New World plants display characteristics more like juniper and arborvitae. You can clearly see the upright cones. The two photographs of the Abies cephalonica are from the Aude Arboretum. With the Norway they tend to be angled, sort of having four sides. The coast Douglas-fir variety is the dominant tree west of the Cascade Mountains in the Pacific Northwest, occurring in nearly all forest types, competes well on most parent materials, aspects, and slopes. In the last post I mentioned that neither Abies nor Pseudotsuga species have a peg whereas Tsuga species do. Spruce Tree Identification. Post Nov 18, 2016 #1 2016-11-18T02:48. Redwood vs. Douglas Fir for Fencing. ... tulip poplars aren’t poplar trees and Douglas fir are not true firs. Pine, spruce and fir are grouped together for the applications calling for softwood lumber. The cold weather helps the tree retain needles. Sitka needles are more spiky than Norway. Gary. Is this there a consensus on this? they hang down. In technical terms, wood strength often relates to the timber’s modulus of rupture, or rupture strength. On the other hand, perhaps you don't know where to start at the tree lot. It is rare to find fir cones on the ground. Fir is probably a premium. Whereas those of the Norway are much darker, almost orangey-red. If you pull a needle off a small scar will be left. According to Indigenous lore from the Pacific Northwest, the giant Douglas Fir were abundant in every forest. Why isn't Douglas fir a true fir? ... winner+fir. The table below provides laboratory values for several properties of wood that are associated with wood strength. I have personally struggled with this as a differentiating feature between the two species. how do you tell the difference between coniferous trees. Another indicator for the giant fir is apparently the twig shoots are quite dark brown, almost black in colour. I actually started the post earlier today and had to come back to it. They are not hard like pine cones. I think of Spiky Spruce, Feathery Fir. Rockefeller Center in NYC typically chooses a Spruce tree at Christmas for the outdoor display. It has been called a pine, hemlock and spruce. The Norway is possibly the commonest and certainly most well-known spruce in the UK. trees. The essential oil he recommends for inhalation. The resin is recommended by Menzies-Trull as a liniment. Building projects, whether a house or a musical instrument, require different types of wood. I'm sure someone more knowledgeable than me will weigh in on this subject. One of the simplest ways to answer how do you tell the difference between spruce and fir is with the cones. Douglas fir. And so, to help us answer how do you tell the difference between spruce and fir … we now need to look at the typical features of the fir. Sorry, your blog cannot share posts by email. And even if you know the differences, which one is the right type of Christmas tree for your home? Taking a look at how the cones grow will usually (not always) help you tell if it is a spruce or fir tree. Picea mariana more commonly known as black spruce is a popular essential oil. Additional needle characteristics (e.g., needle length, sharpness, flexibility, scent, and color) are needed … The silver fir (Abies alba) contains resin and volatile oil as would be expected. Okay so Abies aren’t what you would call feathery, more leathery really, but they are more ‘feathery’ than the spiky Picea. Both are typically viable options, but they both have qualities … Building Materials: Douglas Fir vs Western Red Cedar Read More » BSc (Hons) Herbal Medicine / Douglas-fir is the name of an entire genus of trees that contains six species--two native to North America and four native to eastern Asia. None are native to the UK. On true firs the cones stand up. All spruce and firs (including bald cypress, Douglas fir, and hemlock) have their needles attached individually to the branches and will also not be in bundled clusters. It is reputedly beneficial in massage for muscle aches and pains and poor circulation although I personally haven’t used it in this way. Not a great indicator without comparison. View all posts by Nicole. Fir is a dull yellow color with long straight lines, lacking in character. Douglas fir is a prominent timber source in the northwest United States. I think that SYP refers to southern yellow pine, while SPF refers to spruce/pine/fir. Sitka needles usually are flat. Photo credit: Jill O’Donnell, MSU. You may notice in the images above. Douglas fir. Sitka are paler on the underside. Spruce vs. Fir – Trick #2 Look At The Cones. It is decongestant so beneficial for respiratory infections. Leaves: Flat, soft needles that grow in rows. Believed the third largest tree species in the world. The most important consideration when buying boat timber is quality. Other common names: Oregon pine, red fir, and red spruce. The liniment he indicates externally for respiratory or rheumatic disorders and also for impetigo – a skin infection. Very different from other types of cones! It has citrus-grapefruit smelling leaves. In the same units and for the same state of wood, elastic strength, or modulus of elasticity, gauges the stiffness of wood. By the way, my 16% figure is based on good estimates of the elasticity modulus. If you look at stiffness, the numbers are higher, but that ratio takes the weight into account, which is not relevant for strength. In fact the Collins book describes Sitka needles as “much flattened”. user-7009029 01/12/2018 Douglas-fir are not true firs. In fact they are almost papery-like and squishy. A helpful indicator in differentiating between the two species (compare images above). Adapted to a moist, mild climate, it grows larger and faster than Rocky Mountain Douglas-fir. Picea or spruce usually will have more spiky needles than the fir. You can see a small green scar where I have pulled out a leaf from the Grecian fir (image to right). It is more closely related to the larch than any of these. They have many benefits, and all parts of the tree have edible and medicinal uses, including the needles, bark, and resin. Fast growing so popular for timber and paper production. The shoots of the Sitka are yellowy/whitish pale brown. Pseudotsuga menziesii. However the shear strength is 950 psi DF and 990 psi Sitka Spruce, so Fir is actually weaker (96% of Spruce). Spruce vs pine, pine vs fir – they can all be a bit confusing at times. The wood is white hence ‘alba’. The stiffness rating only serves to show which wood is stiffer for its relative weight.
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