The Rose Society of Ontario was founded in 1913 in Toronto by a group of dedicated ladies. Men were admitted in 1918, and by 1954 membership had spread across the country. To reflect that fact our name was officially changed to the Canadian Rose Society.
We have members from the Atlantic Ocean to the Pacific Ocean and from the 49th parallel in the south to the Northwest Territories in the north. Because our members are so widely spread out, our publications are a very important link. The Rose Annual is published in September, the magazine, The Rosarian, is published once a year and the newsletter, The CommPoster is published five times a year
Fees:
Regular: $30
Family: $35
Affiliate Society: $35
Institutes & Nurseries: $35
US: $35 US funds
Foreign (other than US): $50 US funds
| Area & First Bloom Date | Main Bloom Date |
| Vancouver, Victoria and Lower Mainland of British Columbia - May 15 | June 18 |
| British Columbia interior - June 10 | July 1-9 |
| Calgary, Alberta - May 28 | July 1-15 |
| Edmonton, Alberta - June 10 | July 1-9 |
| Saskatchewan and Manitoba - June 20 | June 30-July 9 |
| Southern Ontario - May 28 | June 20-30 |
| Northern Ontario - June 10 | July 1-9 |
| Montreal, Quebec - June 5 | June 15-July10 |
| Prince Edward Island - June 20 | July 8-16 |
| Halifax and most of Nova Scotia - June 10 | July 8-16 |
| C-convention F-festival L-lecture M-meeting R-rose show S-seminar T-trials |
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| May 4 | Toronto, Ontario | M L |
Canadian Rose Society, Greater Toronto Rose & Garden Society |
Annual General Meeting |
| June 21-22 | Royal Botanical Garden Burlington, Ontario |
R | Hamilton & Burlington Rose Society, Mark Disero mdisero@allstream.net |
All-Canadian Rose Show - a celebration of Canadian rose hybridizers |
| October 15 | Toronto Botanical Garden Toronto, Ontario |
L | Greater Toronto Rose & Garden Society | Guest speaker: Wilhelm Kordes III |