2024 Helleborus
2023 Peach tree
2022 Anemone
2021 Penstemon
2020 Amsonia
2019 Baptisia
2018 Astrantia
2017 Geranium
2016 Veronicastrum
2015 phlox
2014 Salvia
2013 Aster
2012 Nepeta
2011 Campanula
2010 I Helenice
2009 Echinacea
2008 Scaly
2007 Veronica
Species, groups or families of perennials