Larix lyallii

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Author:J Brew
Source:http://commons.wikimedia.org/wiki/File:Larix_lyallii_Headlight_Basin.jpg

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Author:Marshmallow from Seattle, WA, USA
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Author:Original uploader was Schzmo at en.wikipedia
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Author:Walter Siegmund (talk)
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Author:Walter Siegmund (talk)
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Author:Walter Siegmund (talk)
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Author:Walter Siegmund (talk)
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Author:Walter Siegmund (talk)
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Author:mountainamoeba on Flickr
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Author:mountainamoeba on Flickr
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Author:mountainamoeba on Flickr
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Author:mountainamoeba on Flickr
Source:http://commons.wikimedia.org/wiki/File:Autumn_Tamarack_Larches.jpg

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Author:mountainamoeba on Flickr
Source:http://commons.wikimedia.org/wiki/File:SubalpineLarch_7717l.jpg

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Author:mountainamoeba on Flickr
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Author:mountainamoeba on Flickr
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Author:mountainamoeba on Flickr
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Source:http://plants.usda.gov/java/largeImage?imageID=laly_005_ahp.tif

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Source:http://plants.usda.gov/java/largeImage?imageID=laly_001_ahp.tif

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Source:http://plants.usda.gov/java/largeImage?imageID=laly_003_ahp.jpg

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Source:http://plants.usda.gov/java/largeImage?imageID=laly_007_avp.tif

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Growing Info

Scarification: none required

Germination: sow seed 1/4 deep, tamp the soil, keep moist, mulch the seed bed, remove mulch upon germination

Other: fall sowing in mulched beds is prefered to artificial stratification

Larix lyalliiLarix lyallii

Subalpine Larch

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Larix lyallii

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Details

Characteristics

Fall Color

Growing Info

Scarification: none required

Germination: sow seed 1/4 deep, tamp the soil, keep moist, mulch the seed bed, remove mulch upon germination

Other: fall sowing in mulched beds is prefered to artificial stratification

Pfaf description:

Physical Characteristics : A decidious Tree growing to 25 m (82ft 0in). It is hardy to zone 3 and is not frost tender. The flowers are hermaphrodite (have both male and female organs) The plant prefers light (sandy), medium (loamy) and heavy (clay) soils.The plant prefers acid, neutral and basic (alkaline) soils..It can grow in semi-shade (light woodland) or no shade.It requires moist soil.

Usda description:

Conservation Plant Characteristics

Larix lyallii Parl.
subalpine larch
LALY

Summary
Duration	Perennial
Growth Habit	Tree
Native Status	L48 (N), CAN (N)
Federal T/E Status
National Wetland Indicator

Morphology/Physiology
Active Growth Period	Summer
After Harvest Regrowth Rate
Bloat	None
C:N Ratio	High
Coppice Potential	No
Fall Conspicuous	Yes
Fire Resistant	No
Flower Color	Yellow
Flower Conspicuous	No
Foliage Color	Green
Foliage Porosity Summer	Dense
Foliage Porosity Winter	Porous
Foliage Texture	Fine
Fruit/Seed Color	Brown
Fruit/Seed Conspicuous	No
Growth Form	Single Stem
Growth Rate	Slow
Height at 20 Years, Maximum (feet)	15
Height, Mature (feet)	40.0
Known Allelopath	No
Leaf Retention	No
Lifespan	Long
Low Growing Grass	No
Nitrogen Fixation	None
Resprout Ability	No
Shape and Orientation	Erect
Toxicity	None

Growth Requirements
Adapted to Coarse Textured Soils	Yes
Adapted to Fine Textured Soils	No
Adapted to Medium Textured Soils	Yes
Anaerobic Tolerance	None
CaCO3 Tolerance	None
Cold Stratification Required	No
Drought Tolerance	High
Fertility Requirement	Low
Fire Tolerance	Low
Frost Free Days, Minimum	90
Hedge Tolerance	None
Moisture Use	Low
pH, Minimum	3.9
pH, Maximum	5.6
Planting Density per Acre, Minimum	430
Planting Density per Acre, Maximum	1200
Precipitation, Minimum	26
Precipitation, Maximum	95
Root Depth, Minimum (inches)	36
Salinity Tolerance	None
Shade Tolerance	Intolerant
Temperature, Minimum (°F)	-58

Reproduction
Bloom Period	Late Spring
Commercial Availability	Contracting Only
Fruit/Seed Abundance	Low
Fruit/Seed Period Begin	Summer
Fruit/Seed Period End	Fall
Fruit/Seed Persistence	No
Propagated by Bare Root	Yes
Propagated by Bulb	No
Propagated by Container	Yes
Propagated by Corm	No
Propagated by Cuttings	No
Propagated by Seed	Yes
Propagated by Sod	No
Propagated by Sprigs	No
Propagated by Tubers	No
Seed per Pound	134000
Seed Spread Rate	Slow
Seedling Vigor	Low
Small Grain	No
Vegetative Spread Rate	None

Suitability/Use
Berry/Nut/Seed Product	No
Christmas Tree Product	No
Fodder Product	No
Fuelwood Product	Medium
Lumber Product	No
Naval Store Product	No
Nursery Stock Product	Yes
Palatable Browse Animal	Medium
Palatable Graze Animal
Palatable Human	No
Post Product	No
Protein Potential
Pulpwood Product	No
Veneer Product	No

Wiki description:

Subalpine Larch ( Larix lyallii ), or simply Alpine Larch , is a coniferous tree native to northwestern North America . It lives at very high altitudes (1800-2400 m) in the Rocky Mountains of Idaho , Montana , British Columbia , and Alberta . There is a disjunct population in the Cascade Range of Washington . Subalpine Larch is hardy and can survive very low temperatures in thin rocky soils, which is why the tree is often found near treeline. However, it can grow in a variety of soils and with or without shade, as long as the soil is moist but well-drained.