Red fir

From - Plant Encyclopedia and Gardening wiki
Jump to: navigation, search
 Abies magnifica subsp. var.  Red fir, Silvertip fir
Abies magnifica 8016t.jpg
Habit: tree
Height: to
Width: to
80ft120ft 15ft20ft
Height: 80 ft to 120 ft
Width: 15 ft to 20 ft
Lifespan: perennial
Origin: S Oregon to N California
Exposure: sun, part-sun
Water: moist
Features: evergreen, foliage
Hidden fields, interally pass variables to right place
Minimum Temp: °Fwarning.png"°F" is not a number.
USDA Zones: 6 to 8
Sunset Zones:
Flower features:
Pinaceae > Abies magnifica var. ,

The Red Fir or Silvertip fir (Abies magnifica) is a western North American fir, native to the mountains of southwest Oregon and California in the United States.

It is a large evergreen tree typically up to 40-60 m tall and 2 m trunk diameter, rarely to 76 m tall and 3 m diameter, with a narrow conic crown. The bark on young trees is smooth, grey, and with resin blisters, becoming orange-red, rough and fissured on old trees. The leaves are needle-like, 2-3.5 cm long, glaucous blue-green above and below with strong stomatal bands, and an acute tip. They are arranged spirally on the shoot, but twisted slightly s-shaped to be upcurved above the shoot. The cones are erect, 9-21 cm long, yellow-green (occasionally purple), ripening brown and disintegrating to release the winged seeds in fall.

More information about this species can be found on the genus page.


Do you have cultivation info on this plant? Edit this section!


Do you have propagation info on this plant? Edit this section!

Pests and diseases

Do you have pest and disease info on this plant? Edit this section!


There are two, perhaps three varietieswp:

  • Abies magnifica var. magnifica (Red Fir) - cones large (14-21 cm), cone bract scales short, not visible on the closed cones. Most of the species' range, primarily in the Sierra Nevadawp.
  • Abies magnifica var. shastensis (Shasta Red Fir) - cones large (14-21 cm), cone bract scales longer, visible on the closed cone. The northwest of the species' range, in southwest Oregon and Shasta, Siskiyou and Trinity Counties in northwest Californiawp.
  • Trees on the eastern side of the southern Sierra Nevada also have long bracts, and additionally have smaller cones, 9-15 cm long. These trees, possibly a third variety, have not been formally namedwp.

Red Fir is very closely related to Noble Fir (Abies procera), which replaces it further north in the Cascade Range. They are best distinguished by the leaves; Noble Fir leaves have a groove along the midrib on the upper side, while Red Fir does not show this. Red Fir also tends to have the leaves less closely packed, with the shoot bark visible between the leaves, whereas the shoot is largely hidden in Noble Fir. Some botanists treat Abies magnifica var. shastensis as a natural hybrid between Red Fir and Noble Firwp.



  • American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432

External links

blog comments powered by Disqus
Personal tools
Bookmark and Share