Wood Classification – Hard or Soft?
- on 03.13.09
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The distinction between hard and soft is a very easy one, in every field except woodworking. For instance when you are ordering tacos, the choice of hard or soft is easy. Or when you are purchasing a new mattress or pillow, hard or soft choices are obvious. The same can not be said about wood. It is really impossible to determine if a piece of wood is a hardwood or soft wood simply by appearance, feel or heft. You really need to understand what kind of tree the wood came from.
All trees reproduce by creating seeds. Hardwood trees and softwood trees produce vastly different types of seeds. Those for hardwood are always produced with some sort of cover on the seed, while softwood tree seeds will have no covering. The hardwood seeds which are known as Angiosperms, can be found in things like apples, pears or acorns. While the seeds for softwoods, are released by the tree without any protection for the seed. The scientific name for softwood trees is Gymnosperms.
A more general way to think about the difference is that hardwood trees will lose all of their leaves during cold weather, while the softwood trees will retain there leaves. Trees like the maple or oak are all in the angiosperm or hardwood family, while trees like the pine, or fir trees are part of the softwood or Gymnosperm family.
It is also correct to say that Evergreens are in the softwood grouping while deciduous trees are from the hardwood side. No matter which set of terminology you choose to use, the distinction is really based on the reproduction habits of the tree and nothing else.
So here is a quiz for you. Which of the following woods are hardwoods and which is soft? Pine, Douglas Fir, Maple, Hickory, Chestnut, Apple, Balsa or Walnut. If you choose to put the Maple, Hickory, Chestnut, Apple, Walnut and Balsa in the hardwood category you would have been correct. Balsa trees are deciduous trees, therefore there wood falls into the hardwood classification.
Strange as it seems, that is the real difference. Gee, now I wished I had paid more attention back in junior high school science classes when they tried to teach me these things.