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William Siff

Licensed Acupuncturist
Clinical Herbalist

Author of The Plant Medicine Protocol

Founder & Formulator of Goldthread Tonics

Creator of The Plantventure Experience

Founder of Goldthread Apothecary &

Herb Farm

William Siff is a licensed acupuncturist, clinical herbalist, ethnobotanist, and health educator who specializes in Ayurvedic and Traditional Chinese Medicine. An innovator in the field of plant-based medicine, William has spent over two decades working with individuals and groups to successfully incorporate medicinal plants into their lifestyles as an essential element of a healthy lifestyle. 


In addition to maintaining a thriving natural medicine practice, William is also an entrepreneur, author, medicinal plant grower and formulator of botanical products. His uniquely wide-ranging expertise in the field led William to create the Goldthread Herb Farm and Apothecary, where he cultivated over 100 varieties of medicinal plants, created the Farm to Pharmacy internship program, and founded the country’s first medicinal herb CSA program. The farm supplied his clinical practice and retail herbal pharmacy with local, organic plant medicines, and for over a decade served the community as a successful new model of effective and affordable health care rooted in nature.  

With the goal of expanding Goldthread’s reach and impact, William formulated a line of functional beverages that make it easy for people living busy modern lives to access the power of medicinal plants.  The tonics, made with medicinal plants sourced through a global network of generational farmers, are available at retailers across the country. William’s frequent sourcing trips have evolved into numerous projects around the globe designed to create long-term economic prosperity for those who grow and gather these special plants.


His current focus, The Plantventure Project, is a comprehensive resource William created to share the world’s great treasury of ethnobotanical wisdom, along with the tools, skills, and knowledge people need to successfully integrate medicinal plants into their lives.


The experiences he’s had amongst the world’s healthiest plant-centric cultures combined with his clinical methodology are at the heart of William’s forthcoming book from Artisan publishing, The Plant Medicine Protocol – a detailed blueprint for unlocking optimal health with medicinal plants that closely mirrors the approach that has been so successful for his patients. William is a frequent guest lecturer and nationally recognized expert in the field of natural medicine. He holds a Masters of Science in Acupuncture and Asian Medicine, is certified by the NCCAOM in Chinese Herbology, and is a professional member of the American Herbalist Guild. 

William in the mountains of Greece wild-crafting Mountain tea

My goal is to support each patient to seamlessly and completely integrate medicinal plants into their daily life. Over the years, I’ve gotten thousands of patients, students, friends and family members to embark on their own plant-powered lifestyle. Why? Because these plants are effective, affordable, enjoyable, self-empowering and environmentally sustainable ways to optimize health.  

​More than two decades in clinical practice, running an herbal pharmacy, growing medicinal plants, teaching hundreds of students, and formulating herbal products, all while living a plant-saturated life myself, has convinced me that medicinal plants are an essential aspect of both individual and societal health.

Lavender fields in Provence, France

The highest goal of medicine according to Ayurveda is for individuals to achieve optimal health so that we can actualize our potential and make a positive impact on society. When you make your life better, you make the world around you better.

Hear More

The Gabby Reese Show

Incorporating Plant Medicine into Your Everyday Life with William Siff

William Siff, Ethnobotanist and founder of the herbal drink brand Goldthread joins me today to talk about ways we can practically use plant medicine. When I say plant medicine it can be as simple as items you already have in your cabinets (things like cinnamon, herbal teas for digestion, turmeric for inflammation). Believe it or not, William makes this topic entertaining, sexy and inspiring. I have already started to incorporate his suggestions into my daily habits. Enjoy!

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