Garibaldi Park Whistler A to Z: UsneaThe pale green shub-like growths hanging from trees in the forests around Whistler is called usnea.  These bushy, coral-like fruticose lichens anchor to bark and branches on trees and hang like tinsel on a Christmas tree.  known as old man’s beard, usnea tends to thrive on dead and dying trees and is can appear to be harming their hosts.  They actually do no harm to trees and prefer dying ones for their lack of sunlight blocking canopy growth. 

Whistler & Garibaldi Hiking

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Usnea need sunlight for photosynthesis and clean, unpolluted air to grow well.  Air pollution significantly hinders their growth, especially sulfur dioxide. In heavily polluted environments growth is measured in millimetres, in good environments like Whistler and Garibaldi Park, they tend to grow 10 to 20 centimetres long. When you encounter forests with plentiful usnea draped over branches, you have found a bioindicator that the region has high quality, clean air.  Many of Whistler area hiking trails pass through sections of forest with astounding amounts of usnea hanging from branches.  Usnea is slow growing and is able to endure long periods of hot dry weather.  Sections of the Brew Lake and Newt Lake trails, for example, have rocky, exposed ridges with very little soil covering the bedrock.  These areas are frequently starved of water and the hardy trees that survive are desiccated and sickly looking.  These are great environments for usnea to grow and give these sections of brutalized trees a strangely haunting appearance.  Usnea has antibiotic properties and is effective to treat skin infections.  When applied to wounds, usnea appears to fight infection and speed up the healing process.  It is simply pulled from a tree, moistened with water and held against the wound.  The active component is usnic acid and according to Paul Bergner, in his book Medical Herbalism, its antibacterial properties have shown to be effective against staphylococcus bacteria, streptococcus bacteria and even a bacterium that commonly causes pneumonia.

Usnea at Green Lake in Whistler

Usnea on the Wedgemount Lake Trail in Whistler

Usnea on the Panorama Ridge Trail

Coast Douglas-fir trees are medium to extremely large trees that you will encounter in Whistler and Garibaldi Park. They are the second tallest conifer ...
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Hidden in the tangle of forest along Green Lake where the old Parkhurst Sawmill once operated, is the bizarre and beautiful Parkhurst Plow Tree.  A very ...
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The Green Lake Loop is the original trail that runs around the back side of Green Lake.  Before the Sea to Sky Highway was cut through the valley in 1964, ...
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Arête: a thin ridge of rock formed by two glaciers parallel to each other. Sometimes formed from two cirques meeting. From the French for edge or ridge.  Around ...
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Erratic or glacier erratic is a piece of rock that has been carried by glacial ice, often hundreds of kilometres.  Characteristic of their massive size and ...
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Whistler, the surrounding mountains, and Garibaldi Provincial Park are home to two types of bears.  Black bears and grizzly bears.  Black bears are ...
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When you hike in the alpine in Whistler and Garibaldi Provincial Park, you will often encounter unbelievably hardy and sometimes mangled looking trees.  ...
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Hoary Marmots are the cute, pudgy, twenty plus pound ground squirrels that have evolved to live quite happily in the hostile alpine areas around Whistler.  ...
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May is an extraordinarily beautiful time of year in Whistler.  The days are longer and warmer and a great lull in between seasons happens.  Whistler is fairly ...
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June is a pretty amazing month to hike in Whistler.  The average low and high temperatures in Whistler range from 9c to 21c(48f/70f).  The summer tourist ...
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July is a wonderful time to hike in Whistler and Garibaldi Provincial Park.  The weather is beautiful and the snow on high elevation hiking trails is long ...
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August hiking in Whistler definitely has the most consistently great, hot weather.  You can feel the rare pleasure of walking across a glacier shirtless and ...
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Whistler and Garibaldi Park Hiking Gear Rental

Madeley Lake is a gorgeous mountain lake located high up in the Callaghan Valley just a short drive past Alexander Falls.  From Whistler Village it takes about 50 minutes to drive the 27.4 kilometres to get to the ...
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Garibaldi Lake is the centre and base for much of the hiking in Garibaldi Provincial Park. The Garibaldi Lake campsite is located on the amazing, turquoise shores of this massive and mostly still wild ...
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Cheakamus Lake is a wonderfully relaxing way to get in the wilderness easily and quickly from Whistler Village. The trail begins on the far side of Whistler Mountain, 8 kilometres from the Sea to Sky Highway ...
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Skookumchuck Hot Springs(aka T'sek Hot Springs and St. Agnes Well), located two hours north of Whistler along the edge of the huge Lillooet River. The name Skookumchuck means "strong water" in the language ...
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