October 23 - October 24, 2020


Charlottesville, VA

I will be teaching classes on Talking Leaves, the Language of Plants, Adaptogens: Herbs for Strength, Stamina and Stress Relief, Herbal Nootropics: Botanicals for Enhancing Memory, Focus and...

August 20 - August 23, 2020

Northwest Herb Symposium

Coupeville, WA

A wonderful conference located on Whidby Island in the Puget Sound. I’ll be presenting classes on Analgesia: The Search for Effective Pain Relief, Botanical/Nutritional Treatment of Depression,...

June 28, 2020

Green Medicine Program

New York, NY

The Energetics of Herbs – the 10 Tastes. Come learn a simple energetic system that will allow you to understand how to treat your patients rather than a generic disease.

June 12 - January 14, 2020

The Allies for Plants & People Symposium

Bryn Athyn, PA

Guido Masé and I are doing an herb walk and I am teaching classes on ADHD and Alzheimer’s disease. Other teachers will be Rosemary Gladstar, Charis Lindrooth, D.C., Paul Bergner and Tammi...

May 29 - June 1, 2020

Medicines From the Earth

Black Mountain, NC

Over forty presentations including: • Women, Autoimmunity and Estrogen Metabolism • In the Zone: Research Considerations for Microdosing Entheogens • Cultivating Skin Microbiome Radiance...

May 15, 2020


Port Murray, NJ

The Magic of Herbs: Herbs have a long tradition of use for healing the body, as well as the mind and spirit. In this hour and a half herb walk, we will talk about how the herbs found growing at...

March 27 - March 29, 2020

Southwest Conference on Botanical Medicine

Tempe, AZ

Over 30 lectures plus a panel discussion and pre-conference events. Lectures include: • Mushroom Medicine in Women’s Health • Management of Bipolar Disorder • Mitochondrial Support for...

March 4 - March 7, 2020


Anaheim, CA

I will be leading herb walks along with Roy Upton, Christopher Hobbs and Feather Jones at the Fullerton Arboretum.

February 8 - February 9, 2020

Traditions School of Herbal Studies

St. Petersburg, FL

I will be presenting classes on the Botanical/Nutritional Treatment of Depression and Anxiety, Adaptogens: Herbs for Strength, Stamina and Stress Relief, Medicine of the Soul: The Ritual Use of...

September 12 - September 15, 2018

Natural Products Expo East

Baltimore, MD - September 27-28, 2013

I will be leading an herb walk along with Roy Upton on September 12th. Contact:   Karen Tuorto, Herbalist & Alchemist, Inc., 51 S. Wandling Ave., Washington NJ  07882,...

September 8, 2018

Back to Your Roots Herbal Retreat

Toronto, Canada

Join Donna Bryant Winston and I at this joyful celebration of spirit and wisdom, as well as a special time of honoring the Earth and her plant rich being.

August 9 - August 12, 2018

Herb Camp

Courtenay, British Columbia

I will be facilitating this four day retreat for practitioners and senior students along with Chanchal Cabrera.   This event will include round table discussions of clinical applications...

July 21 - July 22, 2018

The Association of Naturopathic Practitioners

London, England

I will be teaching at this year’s Naturopathic Summit on Adaptogens and Anxiety and Depression.  Other presenters include Kerry Bone, Martin Powell and Peter Jackson Main.

June 29, 2018

Well-Sweep Herb Farm

Port Murray, NJ

I’ll be leading an evening herb walk at this beautiful herb farm, followed by Cherokee stories around a fire.

June 9, 2018

MID-ATLANTIC HERB CONFERENCE-Allies for Plants and People

Upper Black Eddy, PA

I am pleased to be the keynote speaker at this new conference.  I will also be leading an herb walk and teaching a class on Adaptogens.  Other fantastic teachers include Christopher Hobbs,...

May 18 - May 20, 2018

Traditional Roots Conference

Join me at the 5th annual conference, which draws on clinical tradition and modern scientific research to offer the best of both worlds.  Other teachers include Bevin Clare, Kevin Spelman, Eric...

May 3 - May 6, 2018

NY Complementary and Alternative Veterinary Medical Association Conference

I will be leading herb walks on Menla Mountain and teaching on Analgesia; The Search for Effective Pain Relief, Tick-borne Diseases, Adaptogens, Autoimmune disease and Allergies with a Summary and...

February 25, 2018

The 10 Tastes-The Energetics of Herbs-NOW OPEN TO THE PUBLIC

NY Open Center

We will explore the tastes and qualities of herbs and how to match them with a person’s symptoms.  All indigenous forms of medicine utilize a system of energetics to understand an...

June 9 - June 11, 2017

International Herb Symposium

Wheaton College - Norton, MA

This incredible conference features a keynote address with Paul Stamets and an amazing gathering of herbal teachers, including Rosemary Gladstar, Christopher Hobbs, Jim McDonald and Phyllis Light, to...

March 29 - December 31, 2017

David's Interview on the Plant Medicine Summit

March 29 - December 31, 2017

David's Interview on the Beyond Pain Summit-10/4/17

Listen to David's interview on the free Beyond Pain Summit

November 4 - November 6, 2016

Ohlone Herbal Center

Berkeley, CA

I will be teaching an herbal pathology weekend intensive.  My classes will be Differential Treatment for Anxiety and Depression with Botanicals and Nutritional Medicine, Herbal and Nutritional...

September 29 - October 3, 2016

American Herbalists Guild

Seven Springs, PA

I will be teaching at this year’s conference along with many other wonderful teachers.

August 19 - August 21, 2016

Florida School of Holistic Living

I will be teaching an herbal intensive weekend on the Talking Leaves:The Language of Plants

June 3 - June 6, 2016

Medicines From The Earth

Black Mtn, NC

I will be leading an Ethnobotanical and Native Plant Field Study, and teaching classes on Brain Pain, the Challenge of Migraines-Herbal/Nutritional Treatment of a Chronic Neurovascular Disorder and...

May 7, 2016

ABC's Herb Day

Austin, TX

I am pleased to be joining in this celebration, which brings together professionals, businesses, and organizations that share a love of and passion for herbs and herbal medicine.  I’ll be...

May 6, 2016

AOMA SW Symposium

Austin, TX

This conference brings together the diverse community of health care providers from fields across the spectrum.  I will be teaching a class on the Ten Tastes: The Energetics of Herbs. Other...

April 6, 2016

Downloadable Video Course! Lifting the Shadows

You've learned that herbal medicine can be a safe, effective alternative for combatting chronic stress, anxiety, and depression.   Are you ready to live a life where you understand why you or...

November 6 - November 8, 2015

Eclectic School of Herbal Medicine

Lowgap, NC

I will be teaching an herbal intensive weekend on mental health.  The topics will include Differential Treatment of Depression and Anxiety, ADHD and Autism Spectrum Disorders.  

October 1 - October 4, 2015

Restorative Medicine Conference

Blaine, WA

Classes include Uncommon Uses of Common Medicinal Plants and Men's Health.

August 15 - August 16, 2015

Appalachian Center for Herbal Studies

Arab, AL

I will be at Phyllis Light’s wonderful center for a weekend of teaching.  I will be teaching classes on the differential treatment of anxiety & depression, little-known herbs of the...

June 26, 2015

Well-Sweep Herb Farm

Contact: Louise Hyde, Well Sweep Herb Farm, 205 Mt. Bethel Rd., Port Murray NJ 07865, 908-852-5390

A unique evening herb walk followed by Cherokee stories around a fire, always a good night!  

May 29 - June 1, 2015

Medicines From the Earth

Black Mountain, NC

Topics include: ·      Early childhood development as a basis for mental health ·      The gut/brain connection and the...

April 10 - April 12, 2015

Southwest Conference on Botanical Medicine

Tempe, AZ

Topics include ·      The cytokine connection to insomnia ·      Working with PTSD ·      Analgesia:...

November 6 - November 9, 2014


Always a great conference!  I’ll be teaching a class on Differential Treatment of Depression and Anxiety, as well as an intensive with my dear friend and amazing herbalist Phyllis...

August 2 - August 3, 2014


Join me for a weekend of in -depth classes on herbal medicine for people wanting to understand herbs and how to use them on a clinical level Contact:  Wendy Fogg, 183 Wednesday Hill Rd., Lee,...

May 23, 2014

Well-Sweep Herb Farm

Port Murray, NJ

EVENING HERB WALK AND STORYTELLING A unique evening herb walk followed by Cherokee stories around a fire, always a good night!

March 28 - March 31, 2014

Medicines From The Edge

Join us in Costa Rica, a biodiverse intersection of the Western Hemisphere to learn about the abundant medicinal species of the Tropics. Workshops and plenary sessions by local and international...

February 28 - March 2, 2014

Florida Herbal Conference

2/28-3/2/14 DeLeon Springs, FL

Join me in DeLeon Springs, FL for the 3rd annual Florida Herbal Conference.  I will be a keynote speaker and will give classes on The Ten Tastes and Herbal Medicine, The Past, Present and...

November 7 - November 11, 2013

American Herbalists Guild Symposium

Bend, OR - November 7-11, 2013

Always a great conference!  I’ll be joined by incredible teachers such as Todd Caldecott, Donnie Yance, Mindy Green, Kevin Spelman, Margi Flint and Jonathan Treasure.  My classes...

November 1 - November 3, 2013

Sacred Plant Traditions-E. Charlottesville, VA

Charlottesville, VA - November 1-3, 2013

I am delighted to be teaching for Kathleen Maier again, in the Blue Ridge Mountains.  In this intensive herbal weekend, I will teach classes on Tick-Borne Diseases, Adaptogens, The Ritual Use of...

October 3 - October 6, 2013

Restorative Medicine Conference

San Diego, CA - October 3-6, 2013

This important AARM conference will explore innovative nutritional and botanical treatments for inflammatory and hormonal disorders.  I will be teaching classes on Adaptogens and Cross Cultural...