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We are a member of The Ontario Horticultural Association which was organized in 1906 as a way of uniting the many separate Horticultural Societies in Ontario. Today, with 280 Member Societies, the Ontario Horticultural Association is one of the oldest and one of the largest umbrella organizations in Ontario.

Always renewing itself, the OHA has remained relevant for more than a century. Visit them at  Do take the time to explore the site; there is a wealth of information.


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The OHA is divided into a number of districts. Cobourg is part of  District 4. The District meets 3-4 times a year to review issues pertaining to our area and to ensure we are well represented within the larger organization of the OHA. Click on OHA District 4 to view District information and events.