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Ontario Herbalists Association

Promoting safe & natural healing with plants since 1982

About Herbalism
About the OHA
Find-a-Herbalist
OHA Events
Resources
OHA Membership

Ontario Herbalists Association

Promoting safe & natural healing with plants since 1982

About Herbalism
About the OHA
Find-a-Herbalist
OHA Events
Resources
OHA Membership

Kathryn Patterson, RH

By SiteAdmin / April 9, 2026

kathryn.h.patterson@gmail.com

https://morgancroftherbs.com

214 Mallen Road

Elgin, ON

Linseed Toner-Calmusky, RH

Jillian Davis-Ozmond, RH

Ontario Herbalists Association
10-225 The East Mall, Box 1756 Toronto, ON M9B 0A9
Toll free: 1-877-OHA-HERB (642-4372)
Local: 416-655-4714

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The OHA is gathered on the traditional territory of the Canadian First Nations peoples.
The OHA recognizes that for thousands of years, indigenous people have walked on the land we call Ontario; their relationship with the land is at the centre of their lives & spirituality. They walked gently on this land and offered assistance and shared knowledge to the first European travellers in what was at times a harsh climate.
We acknowledge and thank them for their stewardship of this land throughout the ages and seek a new relationship with them based on honour and respect. We need to follow their example.

The material contained on this website is intended for educational purposes only and no responsibility is assumed for misadventure resulting from the misuse of botanical preparations. If you have a health problem, you should consult a qualified medical doctor for diagnosis. Herbal treatment should be undertaken only with the advice of a qualified herbal practitioner. Self medication may be dangerous or ineffective. General membership in the Ontario Herbalists Association is open to any herbal enthusiast, and does not imply any fitness to practice herbal medicine. The OHA only supports those members who have met or exceeded the requirements for professional membership, who have been approved and given the designation Registered Herbalist (RH), and whose membership is in good standing.

Copyright © 2026 Ontario Herbalists Association

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