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Teagasc has been involved with Euro-Trial since 2008 when it established its first trials. These plant trials are a collaboration between 7 countries in Europe; Netherlands, Germany, France, Britain, Austria, Finland and Ireland. An independent organisation in each country grows and arranges judging of the plants. By growing and assessing the plants over a wide geographic area, it is possible to assess the plants performance and suitability to local climates. The plant species are selected by the committee each year. All new plants are propagated in one location and distributed to all trial sites for planting outside. The plants are assessed between the second and fourth years. Judging panels consist of growers, traders and gardeners and meet a number of times during the year. Assessment criteria vary depending on local preferences however floriferousnous, hardiness and disease resistance are some of the most important features.

Field of Hiscus plants grown for Euro trials

Irelands involvement to date has been with the grateful support of Fitzgeralds nursery in Kilkenny, who have hosted the Weigela and Hibiscus trials.

Trial Reports

Weigela completed – report (Dutch) - Weigela Euro Trials D51 DEF (PDF), Weigela Euro trials final results table (PDF), Weigela Euro trials bruinbladig (PDF)

Buddleja completed – report (Dutch) - Euro trials Buddleja (PDF)

Hydrangea completed – report (English) HNS Euro-trials Hydrangea report(PDF)

Vinca completed RHS results

Hibiscus on going

Physocarpus – planted 2017

Spirea – commencing 2018


Physocarpus trial planted in Kildalton College, Co. Kilkenny May 2017 

Physocarpus selection for Euro-trials

Eurotrial Partner organisations

Germany Bund Deutscher Baumschulen (BdB), Ellerhoop

Finland LUKE, Piikkiö

France Agro Campus Ouest, Angers

Netherlands Royal Boskoop Horticultural Society Boskoop      

Austria Höhere Bundeslehr- und Forschungsanstalt für Gartenbau (HBLFA), Wienna 

Great Britain Royal Horticultural Society (RHS), Wisley

Ireland Teagasc, Kildalton College

Contact Paul Fitters for further information or visit the Euro-Trial website