- 2006
- 2007
- 2008
- 2009
- 2010
- 2011
- 2012
- 2013
- 2014
- 2015
- 2017
- 2018
- 2019
- Abutilon ‘Orange Glow’
- Aloe ferox
- Bletilla striata
- Carissa Bispinosa
- Erythrina christa-galli
- Jatropha gossypifolia
- Justicia brandegeana
- Lantana camara
- Leigh Ann Gale
- Paliurus spina-christi
- Scilla siberica
- Sempervivum arachnoideum
- Senna septemtrionalis
- Veltheimia capensis