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!
Glacier Window: the cave-like opening at the mouth of a glacier where meltwater runs out. Glacier windows are often extraordinarily beautiful. A blue glow ...
Overlord Mountain is the highest peak in the Fitzsimmons Range. Overlord is surrounded by several mountains that collectively are named the Overlord ...
Emerald Forest is a cute little forest that is well hidden between Whistler Cay and Alpine. From Whistler Village, if you go down to the end of Lorimer ...
Western hemlock (tsuga heterophylla) is a large evergreen coniferous tree that is native to the west coast of North America. Unlike many other trees in ...
Col: a ridge between two higher peaks, a mountain pass or saddle. More specifically is the lowest point on a mountain ridge between two peaks. Sometimes ...
Moraines are glacially deposited ridges of debris that accumulate at the sides or terminus of a glacier. Lateral moraines form at the sides of glaciers ...
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 ...
The Garibaldi Volcanic Belt is a line of mostly dormant stratovolcanoes and subglacial volcanoes largely centred around Whistler and extending through much ...
Ring Lake is a fantastically serene and wonderfully remote lake similar to Cirque Lake, but considerably farther to hike to reach it. The 10 kilometre(6.2 mile) hike takes you through a rarely hiked forest, ...
Mount Sproatt, or as it is known locally as just Sproatt, is one of the many towering mountains visible from Whistler Village. Above and beyond Alta Lake, directly across from Whistler Mountain and ...
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 ...
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 ...
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 ...
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 ...
Vancouver is surrounded by seemingly endless hiking trails and mountains to explore. Massive parks line up one after another. Mount Seymour Provincial Park, Lynn Canyon Park, Grouse Mountain, Cypress Park and the enormous Garibaldi Park all contribute to Vancouver ...
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 
