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
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