The Kingston Horticultural Society is affiliated with the Ontario Horticultural Association (Garden Ontario: Share. Grow. Learn.), which was formed in 1906. The Kingston Horticultural Society is subject to the Constitution of the OHA and the provisions of the Horticultural Societies act, R.S.O. 1980, c.204. This organization gives guidance and support to all it’s members.

KHS is part of District 3 of the OHA.

OHA publishes a quarterly newsletter, Trillium. The latest issue is Autumn 2019.

For more information, visit the Garden Ontario website.