Where To See Alberta Larch Trees In Fall. Every autumn the Canadian Rockies explode with colour as the alpine larch tree turn from a deep green to a vibrant yellow.The Huffington Post Alberta's top picks for larch viewing include Lake O'Hara in Yoho National Park, Arnica Lake in Banff National Park, Boulder Pass in Banff National Park, Big Beehive in Lake Louise and many more. Click the link to learn more!