Celestial Seasonings had its beginnings in 1969 in Aspen, Colorado where 19 year-old Mo Siegel gathered wild herbs in the forests and canyons of the Rocky Mountains and made them into healthful teas. In 1969, Siegel and his friend Wyck Hay found a bountiful harvest of wild herbs growing around Boulder, Colorado. With friends and wives helping, they picked the herbs and produced 500 pounds of the first blend called MO's 36 Herb Tea®. It was packaged in hand-sewn muslin bags and sold to a local health food store.

The company continued to grow and revolutionize the tea industry. Herb teas had previously been perceived as having only medicinal significance, but Celestial Seasonings introduced herb teas as flavorful, healthy beverages, virtually creating the modern tea industry. Today "serving" more than 1.2 billion cups of tea per year, the company is the largest herb tea manufacturer in North America and is expanding internationally at a rapid rate. As a reputable brand that consumers can trust, Celestial Seasonings is well positioned to become the herbal expert well into the the new millennium.