Source International – Manufacturing Materials – Learning Center
Fir trees are a genus of 48 – 56 species of evergreen coniferous trees belonging to the family Pinaceae. Firs can be found throughout much of the world, mainly in mountainous regions, in places such as North and Central America, Europe, Asia, and North Africa. Their closest cousin in the tree world is Cedar.
Firs are large trees reaching heights of 30 – 262 ft tall with trunk diameters of nearly 2 ft. to 13 ft. when fully mature. It is easy to distinguish these types of trees from other members of the pine family due to the attachment of needle-like leaves and the trademark cones they produce.†
Fir is generally used in the production of pulp for the manufacture of paper. It is also used to produce a type of rougher, less durable lumber suitable for making plywood, crate construction, indoor framing of buildings, and other woodworking/construction uses which do not require a fine finish or will be exposed to the elements.
Fun fact: Douglas Firs, despite the name, are not actually Firs at all and belong to the genus Pseudotsuga.