The Joan Marsh Trophy is awarded to the Best Polyantha
| Year | Winner |
| 2014 | Betty Mott |
| 2015 | Sandy Simon |
| 2016 | Sandy Simon |
| 2017 | Not Awarded |
| 2018 | Sandy Simon |
| 2019 | Betty Mott |
The Joan Marsh Trophy is awarded to the Best Polyantha
| Year | Winner |
| 2014 | Betty Mott |
| 2015 | Sandy Simon |
| 2016 | Sandy Simon |
| 2017 | Not Awarded |
| 2018 | Sandy Simon |
| 2019 | Betty Mott |