Abies procera glauca (Blue Danish fir, Blue Noble Fir)

Abies procera glauca (Blue Danish fir, Blue Noble Fir) is a cultivar of the noble fir (Abies procera) tree, which is native to the western United States. The Blue Danish Fir is a relatively rare tree that is prized for its striking blue-green needles, which give it a distinctive appearance. 

The Blue Danish Fir has a pyramidal shape with dense, upright branches that are evenly spaced around the trunk. It can grow up to 60-80 feet tall in the wild, although in cultivation it is usually smaller, typically reaching heights of around 30-50 feet. The needles of the Blue Danish Fir are typically around 1 inch long and are arranged in a spiral pattern around the branches. They are a blue-green color and have a waxy coating that gives them a silvery appearance. 

Like other cultivars of the noble fir, the Blue Danish Fir is a slow-growing tree that is well-suited to cooler climates with moist, well-drained soils. It is often used as an ornamental tree in parks and gardens, and is also used in Christmas tree production due to its attractive appearance and long-lasting needles.