Western Hemlock (Tsuga heterophylla)

Set of scaled dimensioned drawings of the Western Hemlock viewed from the front and top

The large evergreen Western Hemlock (Tsuga heterophylla) is native to the regions of the Kenai Peninsula to the northern part of California. The tree can be used for decoration or as an excellent source of food and timber. It is also called Western hemlock-spruce. It favors mild, humid conditions, temperate rainforest on acidic but moist soil. Young trees have conic crowns, while old trees have cylindrical crowns. Its mid-dark green needle-like leaves have a strongly flattened cross-section and the bark is brown, thin, and furrowed. The cones are greenish to reddish-purple when young, but turn brown with age. The Western Hemlock is shade tolerant, and unlike the Eastern Hemlock, it droops.

Western Hemlocks have a typical overall height between 148’-197’ (45-60 m) and spread diameter of 33’-49’ (10-15 m). Exceptional mature Western Hemlock trees may grow to heights of 259’ (79 m) in the wild. The trunk of the Western Hemlock has a diameter of 2’-4’ (.61-1.22 m) with needle-like leaf lengths between .39”-.79” (10-20 mm).

Details

*Under Development*

Height:
148’-197’ | 45-60 m
Width:
33’-49’ | 10-15 m (Spread)
Depth:
2’-4’ | .61-1.22 m (Trunk)
Length:
.39”-.79” | 10-20 mm (Needle)
Height (Exceptional):
259’ | 79 m (Max)
:
Weight:
Area:
:
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Scientific Name:
Tsuga heterophylla
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Properties

Drawings include:

Western Hemlock front elevation, plan view

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Hemlocks (Tsuga) can be found in North America and eastern Asia. This evergreen coniferous tree can be large or medium-size, bearing conical or irregular crowns with a drooping leading shoot. The gray or brown bark is scaly and deeply furrowed while the horizontally arranged branches bend downwards.

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40’-70’ | 12.2-21.3 m
25’-35’ | 7.6-10.7 m (Spread)
2’-3’ | .61-.91 m (Trunk)
.5”-.79” | 13-20 mm (Needle)
Eastern Hemlock
2130.000
1070.000
91.000
2.000
20900
GUIDE
3D
Eastern Hemlock
148’-197’ | 45-60 m
33’-49’ | 10-15 m (Spread)
2’-4’ | .61-1.22 m (Trunk)
.39”-.79” | 10-20 mm (Needle)
Western Hemlock
6000.000
1500.000
122.000
2.000
13500
GUIDE
3D
Western Hemlock
66’-131’ | 20-40 m
10’-18’ | 3-5.5 m (Spread)
2.5’-3.5’ | .76-1.07 m (Trunk)
.5”-.75” | 13-19 mm (Needle)
Mountain Hemlock
4000.000
550.000
107.000
1.900
2900
GUIDE
3D
Mountain Hemlock
45’-65’ | 13.7-19.8 m
20’-30’ | 6.1-9.1 m (Spread)
3.3’-4.9’ | 1-1.5 m (Trunk)
.5”-.75” | 13-19 mm (Needle)
Carolina Hemlock
1980.000
910.000
150.000
1.900
240
GUIDE
3D
Carolina Hemlock