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!
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 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 ...
Whistler Bungee Bridge, also known as the Cheakamus Bungee Bridge is a very convenient and beautiful attraction on the way to or from Whistler from ...
Along Whistler’s Valley Trail near Rainbow Park you come across some impressively unusual trees. Unlike most other Whistler trees with straight trunks and ...
Porteau Cove is a beautiful little stop on the drive to or from Whistler. You will notice the lack of convenient washroom stops on the way to or from ...
Crevasse: is a split or crack in the glacier surface, often with near vertical walls. Crevasses form out of the constant movement of a glacier over ...
The Coast Mountains run from the Yukon down to Vancouver along the west coast of British Columbia in a band that averages 300 kilometres wide(190 miles). ...
The Sproatt East trail is a beautifully wild, steep, but relatively short trail to the magnificent, wide open alpine and summit of Mount Sproatt. Mount Sproatt (1834 metres) towers over Whistler Valley ...
Wedgemount Lake itself is a magnificent destination for a day hike or spectacular overnight beneath the dazzling mountain peaks and stars above Garibaldi Provincial Park. Many sleep under the stars on one of ...
Blackcomb Mountain holds an impressive and ever growing array of hiking trails. From the moment you arrive at the Rendezvous Lodge, you see hiking trails ascend into the distance. The Rendezvous Lodge is ...
Alexander Falls is a very impressive 43 metre/141 foot waterfall just 30 to 40 minutes south of Whistler in the Callaghan Valley. Open year-round and located just before Whistler Olympic Park where several ...
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 ...
June is a pretty amazing month to hike in Whistler and Garibaldi Park. The average low and high temperatures in Whistler range from 9c to 21c(48f/70f). ...
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 ...
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 
