The 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.
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.
More Whistler & Garibaldi Park Hiking A to Z!
When hiking to Parkhurst Ghost Town, the first area you will encounter after you cross the disintegrating bridge over Wedge Creek is the wye. In railroad ...
The sawmill at Parkhurst operated on the triangle of land that juts out into Green Lake and also extended north between the train tracks and the lake. The ...
Mount Garibaldi is the huge, potentially active volcano that Garibaldi Provincial Park is named after. Mount Garibaldi also lends its name to the Garibaldi ...
Surprisingly often in Whistler's forests you will find a tree growing on an old fallen tree or out of a decaying tree stump. Decaying logs and stumps in ...
Western redcedar is a very large tree commonly found in the Pacific Northwest. Frequently growing up to 70 metres and with a trunk diameter of 7 metres, ...
Cirque: a glacier-carved bowl or amphitheater in the mountains. To form, the glacier must be a combination of size, a certain slope and more unexpectedly, a ...
The Garibaldi Volcanic Belt is a line of mostly dormant stratovolcanoes and subglacial volcanoes largely centred around Whistler and extending through much ...
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 ...
Brandywine Falls is one of the must see sights on the drive to or from Whistler, and arguably the nicest of Whistler’s numerous beautiful waterfalls. Located about halfway between Squamish and Whistler, the ...
Brandywine Meadows is a nice, relatively short hike to a massive flower filled valley high up in Callaghan Valley. Located 40 minutes south of Whistler, this tough and sometimes muddy trail gains a huge 550 ...
Ancient Cedars is a nice, easy/moderate 2.5 kilometre (1.6 mile) hiking trail on the far side of Cougar Mountain, just 13.1 kilometres north of Whistler Village. A small, untouched grove of huge western ...
December hiking in Whistler is mainly done on snowshoes, though not always. If it hasn't snowed much recently then trails such as Whistler Train Wreck and ...
February is a great month for snowshoeing in Whistler and Garibaldi Park. The days slowly get longer, but the temperatures stay consistently cold. Expect ...
March is usually a snowy month in Whistler, though in 2024 not a whole lot of snow has fallen. Snowshoes are already not necessary for lots of trails in and ...
Hiking in Whistler is spectacular and wonderfully varied. Looking at a map of Whistler you see an extraordinary spider web of hiking trails that are unbelievably numerous. Easy trails, moderate trails and challenging hiking trails are all available. Another marvellous ...
Squamish is located in the midst of a staggering array of amazing hiking trails. Garibaldi Provincial Park sprawls alongside Squamish and up and beyond Whistler. Tantalus Provincial Park lays across the valley to the west and the wonderfully remote Callaghan Valley ...
Clayoquot Sound has a staggering array of hiking trails within it. Between Tofino and Ucluelet, Pacific Rim Park has several wilderness and beach trails, each one radically different from the last. The islands in the area are often Provincial parks on their own with ...
Victoria has a seemingly endless number of amazing hiking trails. Most take you to wild and beautiful Pacific Ocean views and others take you to tranquil lakes in beautiful BC Coastal Rainforest wilderness. Regional Parks and Provincial Parks are everywhere you turn in ...
The West Coast Trail was created after decades of brutal and costly shipwrecks occurred along the West Coast of Vancouver Island. One shipwreck in particular was so horrific, tragic and unbelievable that it forced the creation of a trail along the coast, which ...
The 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. 
Alexander Falls 
Ancient Cedars 
Black Tusk 
Blackcomb Mountain 
Cheakamus River 
Cirque Lake 
Sproatt East 
Wedgemount Lake 
January 
March 
June 
September 
