Everything about Western Larch totally explained
Western Larch (
Larix occidentalis) is a species of
larch native to the mountains of western
North America, in
Canada in southeastern
British Columbia and southwestern
Alberta, and in the
United States in eastern
Washington, eastern
Oregon, northern
Idaho and western
Montana.
It is a large
deciduous coniferous tree reaching 30-60 m tall, with a trunk up to 1.5 m diameter. The crown is narrow conic; the main branches are level to upswept, with the side branches often drooping. The shoots are dimorphic, with growth divided into long shoots (typically 10-50 cm long) and bearing several
buds, and short shoots only 1-2 mm long with only a single bud. The
leaves are needle-like, light green, 2-5 cm long, and very slender; they turn bright yellow in the fall, leaving the pale orange-brown shoots bare until the next spring.
The
cones are ovoid-cylindric, 2-5 cm long, with 40-80 seed scales; each scale bearing an exserted 4-8 mm
bract. The cones are red when immature, turning brown and the scales opening flat or reflexed to release the
seeds when mature, 4-6 months after pollination. The old cones commonly remain on the tree for many years, turning dull gray-black.
It grows at 500-2,400 m altitude, and is very cold tolerant, able to survive winter temperatures down to about −50 °C. It only grows on well-drained soils, avoiding waterlogged ground.
The seeds are an important food for some
birds, notably
Pine Siskin,
Common Redpoll and
White-winged Crossbill.
Uses
The
wood is tough and durable, but also flexible in thin strips, and is particularly valued for
yacht building; wood used for this must be free of knots, and can only be obtained from old trees that were
pruned when young to remove side branches. Small larch poles are widely used for rustic
fencing.
Western Larch is used for the production of
Venice turpentine.
The wood is highly prized as
firewood in the
Pacific Northwest where it's commonly called "Tamarack," although it's a different species than the
Tamarack Larch. The wood burns with a sweet fragrance and a distinctive popping noise.
Indigenous peoples used to chew gum produced from the tree as well as eat the
cambium and sap.
References and external links
Image:Larix occidentalis UKtallest.jpg|Tree with fall colors
Image:Larix occidentalis1.jpg|Leaves and immature cones in spring
Further Information
Get more info on 'Western Larch'.
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