| Taggart | Lil | Georgetown | Yes | GCO-Design | | |
| McKenzie | Lois | Desbarats | Yes | | | |
| Merlin | Greg | Oshawa | Yes | | | D17 Oshawa Garden Club |
| Reeder | Don | York | Yes | | | D 6 Haldimand HS |
| Freeman | Carol | Durham | Yes | | | D 8 Durham & District HS |
| Murphy | Bonnie-Lynn | Richmond Hill | Yes | GCO-design, RBG-Hort and Rose | | |
| Papineau | Susan | Durham | Yes | | | D 8 Durham & District HS |
| Smith | Maria | Richards Landing | Yes | | | D 13 St. Joseph Island HS |
| Huddle | Diane | Kingston | Yes | | | D 3 Collins Bay HS |
| Foster | Debi | Oshawa | Yes | | | D17 Oshawa Garden Club |
| Baars | Joanna | Arthur | Yes | | | D 7 Grand Valley Horticultural Society |
| Luski | Lorraine | North York | Yes | | | D 5 North York Garden Club |
| Cappelli | Pat | North York | Yes | | | D 5 North York Garden Club |
| Rachfalowski | Joanne | Creemore | Yes | | | D 16 Creemore HS |
| Caldwell | Fran | Brampton | Yes | | | D 15 Brampton HS |
| Lovering | Dale | Orillia | Yes | RGB-Hort and Canadian Rose Society | | |
| Howard | Sherry | Whitby | Yes | | | D17 Brooklin Whitby GC |
| Burroughs | Agnes | Dorchester | Yes | | | |
| Cameron | Mary | Burlington | Yes | RBG 2011 Hort, Rose | | |
| Goff | Michelle | Guelph | Yes | RGB-Hort, Rose, OAAS-Hort | | |
| Gordon | Wale Shamonda | Rockwood | Yes | | | |
| McCutcheon | Marie | Brussels | Yes | | | |
| Gillespie | Ainsley | Beaverton | Yes | | | |
| Takasaki | Myra | Waterloo | Yes | RGB-Hort | | |
| Culbert | Vicky | Goderich | Yes | OAAS Hort 2018 | | |
