2025 – Mammillaria perezdelarosae

2024 – Haworthia Emelyae var. major

2023 – Aylostera vulpina

2022 – Fockea edulis

2020 – Lobivia Saltensis = Echinopsis saltensis

2019 – Haworthia maughanii × truncata

2018 – Thelocactus bicolor var. parras

2017 – Pachypodium lealii subsp. saundersii

2016 – Mammillaria zeilmanniana

2015 – Euphorbia hedyotoides

2014 – Notocactus leninghausii

2013 – Titanopsis calcarea

2012 – Gymnocalycium baldianum

2011 – Euphorbia obesa

2010 – Stenocactus crispatus

2009 – Avonia alstonii

2008 – Gymnocalycium spegazzinii

2007 – Euphorbia obesa

2006 – Ubelmania pectinifera

2005 – Lithops dorotheae

2004 – Discocactus buenekeri

2003 – Dyckia ‘Arizona’ × ‘Brittle Star’

2002 – Obregonia denegrii

2001 – Mestoklema macrorhizum

2000 – Fockea edulis

1999 – Euporbia obesa