About Douglas Fir

Hybrid cottonwoods (Populus deltoides x P. nigra, called P. x canadensis) are by far the fastest growers and for that reason often the tallest trees, 100 to 120 feet is normal, some will be 130 to 140 feet.

Of native trees in Holland beech (Fagus sylvatica) often is the tallest. In planted stands of 150 to 250 years old near estates of the 18th and 19th century on good soils and more inland, so not to exposed to prevailing winds, they often are 100 to 115 feet, but on the best soils they grow up to 130 or even 140 feet. I measured a fallen beech at 42 meter, 137.8 feet, in an area belonging to a castle with tall alleys and forests.