There are multiple species of Ash Hardwood with a range of grain types. At least nine such species make up the main categories.
Black Ash Hardwood (Fraxinus Nigra)
Grown in the northeastern regions of the United States as well as the eastern regions of Canada. A relatively short growth of around fifty feet high is subverted by a high growth rate to keep Black Ash lumber inexpensive, allowing it to be used for a variety of applications such as flooring and other products such as crates, tools, and even baseball bats. The coarse wood is easily shapeable and the light brown surface with a generally straight grain that has a porous quality lending itself to an easy stained finish.
Blue Ash Hardwood (Fraxinus Quadragulata)
Found predominantly in the Midwestern states, Blue Ash grows to a height between fifty and eighty feet. It has a range of colors from lighter to darker, and its texture is coarse in a similar manner to that of an oak tree. The grain is generally straight and even, making it an attractive wood for use in flooring and millwork. It can also be used for many of the same tools as Black Ash.
European Ash Hardwood (Fraxinus Excelsior)
Also referred to as Common Ash, European Ash has a range of shades. It is generally a lighter brown, but darker forms are not so uncommon as to be called rare. Used often in tools, flooring, and crating, European Ash comes from larger trees than Blue or Black Ash. These trees grow up to 115 feet, though their 2-foot diameter is similar to that of the trees previously mentioned.
Green Ash Hardwood (Fraxinus Pennsylvanica)
A fairly small tree, between 50 and 65 feet tall, Green Ash is light in hue with occasionally darker wood available. Like many other woods in its class, Green Ash is very much like oak in texture, running coarse to medium. It is also similar to other species in application, being used for flooring, crating, tools, and baseball bats. It grows all over North America, as far south as Texas and as far north as Nova Scotia, thriving best in wetlands.
Mountain Ash Hardwood (Eucalyptus Regnans)
This is one of the largest trees in its category, growing anywhere from 230 to 330 feet in height with a 5-foot diameter. Thriving at high altitudes, the evergreen Mountain Ash also sports a different color than other species with more of a yellow hue. It is similar, however, in the roughness of its texture and the evenness of its grain. It has a few more uses than other species. It can still be used in tools and flooring, but is also used to make plywood and veneers as well as boats. It is also processed into dimensional lumber used in construction.
Olive Ash Hardwood
Olive Ash is not, in and of itself, a species. It is similar to terms such as Southern Yellow Pine in that it refers to a number of species with similar traits. In this case, such traits specifically relate to its color. Olive Ash essentially embodies the darker forms of many species that can occasionally be found.
Oregon Ash Hardwood (Fraxinus Latifolia)
Growing up to eighty feet tall with a 3-foot diameter, this North American tree is common among its category in terms of color and application. Usually located in the western regions of the continent, it is predominantly found in lighter shades and used primarily for flooring and crating as well as tools, sporting equipment, and millwork.
Pumpkin Ash Hardwood (Fraxinus Profunda)
Used often in tools and baseball bats as well as boxes and flooring, this light and coarse wood comes from trees which are usually around fifty feet high and only one foot wide. Like many similar species, it is found mostly in North America. Usually closer to the east coast, Pumpkin Ash can be found dispersed around lowland areas, often close to rivers. Its dispersal is generally wide across large areas rather than closely forested patches of trees.
White Ash Hardwood (Fraxinus Americana)
As implied by its scientific name, this is often referred to as American White Ash and is predictably grown in North America, where it tends to live in the easternmost states. Despite its small, 1-foot diameter, White Ash is taller than many other species and grows up to around one hundred feet. Its texture and coloring are common to its category, and its purpose is comparable as well in that it is generally used for boxes, floors, tools, and bats.