"If you are in Edmonton, do you realize that our River Valley is part of the largest urban park in North America? This immense, untamed area supports a vast array of trees, shrubs, and herbs. Each plant growing within this northern city is a 'green teacher' with individual properties, preferences, and knowledge to share. The River Valley transforms itself from a 'blur of leaves' into a school of wild wisdom, as you gain knowledge about our local food and medicine." Robert Dale Rogers is a true "green man" steeped in everything herbal. He has a degree in botany and has studied with various healers, ranging from the Cree of Northern Canada to Shaman in Peru.