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!
Russet Lake sits in a wide, glacier carved valley at the base of The Fissile. In the direction opposite The Fissile, up on a plateau less than a ...
The Cloudraker Skybridge and the Raven’s Eye Cliff Walk are new additions to the summit of Whistler Mountain. The Cloudraker Skybridge stretches 130 ...
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 ...
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, ...
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 ...
Whistler can be expensive. Everything worth doing seems to cost a lot of money. But if you step back from the noise and crowds you may spot some secret ...
Whistler spruce is a hybrid of the Sitka spruce and the interior Engelmann spruce. Sitka spruce trees thrive in the rainforests of the Pacific Northwest ...
Fitzsimmons Creek is the beautiful and huge creek that crashes through Whistler Village. When walking from Whistler Village to the Upper Village, you will cross ...
Keyhole Hot Springs (aka Pebble Creek Hot Springs) is located 100 kilometres from Whistler (Village Gate Blvd). Though much of the drive to Keyhole is on logging roads, the route is driveable by most cars ...
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, ...
Brew Lake is beautiful mountain lake just a short drive south of Whistler and is relatively unknown and seldom hiked. Laying at the base of Mount Brew, Brew Lake lays in a massive alpine valley of enormous ...
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 and the freezing level often hovers around the valley. Snowshoes are already not necessary for lots of trails in ...
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 ...
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 quiet ...
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 ...
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 
