| Name | City | OHA Cert | Other Cert | Districts | OHA Home Society: |
|---|---|---|---|---|---|
| Marie Decker | Oakville | Yes | GCO-design, RBG-hort |
| D 6 Oakville HS |
| Trish Symons | Orangeville | Yes | GCO-design, RBG-hort, Rose |
| D 7 Orangeville HS |
| Dale Lovering | Orillia | Yes | RGB-Hort and Canadian Rose Society |
| D 16 Orillia HS |
| Michelle Lynch | Oro Medonte | Yes | GCO-design, Rose |
| D 16 Oro Medonte HS |
| Debi Foster | Oshawa | Yes |
| D17 Oshawa Garden Club | |
| Greg Merlin | Oshawa | Yes |
| ||
| Judy Fine | Ottawa | Yes | GCO-Design |
| D 2 Nepean HS |
| Gillian MacDonnell | Ottawa | Yes |
| D 2 Ottawa HS | |
| Gay MacQuarrie | Ottawa(Kanata) | Yes |
| D 2 West Carleton Garden Club | |
| Jan Middleton | Owen Sound | Other | GCO-design, RBG-hort |
| D 8 Markdale DHS |
| Marj Larson | Oxdrift | Yes |
| D 14 Dryden HS | |
| Name | City | OHA Cert | Other Cert | Districts | OHA Home Society: |
