Judges Listing (testing)
| Last | First | City | OHA Cert | Other Cert | Districts |
| Collins | Elaine | Gananoque | Yes | GCO-design
| |
| Culbert | Vicky | Goderich | Yes | OAAS Hort 2018
| |
| Goff | Michelle | Guelph | Yes | | |
| Harlton | Patricia | Granton | Yes | | |
| Hodgins | Linda | Granton | Yes | | |
| Koch | Carole | Gloucester | Yes | | |
| McDonald | Jane | Guelph | Yes | | |
| Riddell | Julie | Granton | Yes | | |
| Sakarya | Raija | Guelph | Yes | | |
| Silk | Bev | Grafton | Yes | | |
| Smith | Mary A | Guelph | Yes | GCO-Design
| |
| Taggart | Lil | Georgetown | Yes | | |
| Tibbles | Nancy | Goulais River | Yes | | |
| Byrnes | Cliff | Gananogue | Other | RBG-hort, GCO-design
| |
| Haworth | Lillie | Grimsby | Other | GCO-design, RBG-hort
| |
| Smith | Mary A | Guelph | Other | GCO-Design
| |
| Waung | Iris | Greely | Other | GCO-design, RBG-hort
| |
| Last | First | City | OHA Cert | Other Cert | Districts |
