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

If you make it to the summit of Wedge Mountain you will notice off in the distance a beautifully symmetrical mountain that stands out among the rest.  ...
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Twentyone Mile Creek begins its long and steep journey from Rainbow Lake, high up and between Mount Sproatt and Rainbow Mountain.  Cutting between the two ...
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Paper birch, also known as white birch is a type of birch tree that grows in northern North America. Named for its paper-like, white or cream coloured ...
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Ablation Zone: the lower altitude region of a glacier where there is a net loss of ice mass due to melting, sublimation, evaporation, ice calving or ...
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The Cordilleran Ice Sheet covered most of north-west North America for much of the last 2.6 million years.  At the Last Glacial Maximum during the Last ...
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The Garibaldi Volcanic Belt is a line of mostly dormant stratovolcanoes and subglacial volcanoes largely centred around Whistler and extending through much ...
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Cornice: a wind deposited wave of snow on a ridge, often overhanging a steep slope or cliff.  They are the result of snow building up on the crest of a ...
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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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In the(usually) deep March snow of Whistler you have an amazing array of snowshoeing options.  If you have not been to the Whistler Train Wreck, you have ...
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April in Whistler is a wonderful time of year.  The winter deep freeze ends and T-shirt weather erupts.  The village comes alive with overflowing patios and ...
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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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Whistler and Garibaldi Park Hiking Gear Rental

Nairn Falls is a wonderful, crashing and chaotic waterfall that surrounds you from the deluxe viewing platform that allows you to safely watch it from above.  The beautiful, green water rushes through the ...
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The Rainbow Trail is a convenient and popular trail near Whistler Village that takes you to Rainbow Lake as well as the Rainbow-Sproatt Flank Trail, Rainbow Falls, Hanging Lake, Madeley Lake, Beverley ...
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Logger's Lake is an amazing little lake hidden up in the deep forest above the more well known Cheakamus River. The lake, almost unbelievably exists in a long extinct volcano. However, as soon as you see ...
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Taylor Meadows is a very scenic campsite and great alternative to the much busier and more well known, Garibaldi Lake campsite. Located in Garibaldi Provincial Park between Garibaldi Lake and Black Tusk, ...
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