Grand Fir, ‘abies grandis’
The grand fir is one of the tallest firs, reaching heights of 300 feet. It is easily distinguished from other Pacific Northwest firs by its sprays of lustrous needles in two distinct rows. They are usually horizontally spread so that both the upper and lower sides of the branches are clearly visible. The needles are 1 to 1 1/2 inches long with glossy dark green tops and two highly visible white lines of stomata on the undersides.
The pollen strobili are yellowish and the cones are yellowish-green to green, cylindrical, erect, 2 to 4 inches long, occur high in the crowns and dissipate in the fall to release their seeds.
The bark is grayish-brown, usually with white mottles, smooth with resin blisters when young, becoming rigid and then scaly with age. Like most other true firs, it is thinned barked and therefore very sensitive to fire. Control of fires in the drier southern parts of the northwest has allowed a widespread increase of grand fir over the last 50 years.
|Leaf Description: Handsome, deep green 1-1.5" long needles are glossy above, with white lines beneath|
|Mature Height: 80-200′|
|Mature Spread: 15-25′|
|Growth Rate: Fast|
|Light Requirements: Full sun or light shade|