The collection is open to the public every day except Tuesday morning from 15th June until 15th September from 10h00 to 12h00 and from 2.30 – 6pm. From the 16th until 30th September it is open every afternoon except Tuesdays.



The most important hydrangea collection in the world.

This exceptional collection was opened to visitors in 1997. Some of the wild plants originally from Japan were collected by Corinne Mallet in the course of five expeditions. Along with the Japanese species are American and Asian ones which altogether amount to more than 1400 plants

Situation :
This collection is situated at Varengeville-sur-Mer, near Dieppe in Upper Normandy.

The aims of the collection :
research, introduction of new plants, identification, behavioural study and the spread of knowledge throughout the world.

This collection is now internationally recognised. In 1999, it was declared National Collection by the CCVS (Specialised Plant Collection Institute) – the equivalent of the British NCCPG.
The garden covers 2 hectares (5 acres) and is made up of more than 1400 plants (species, sub-species and cultivars) occurring naturally or from over a century of selection by horticulturists. Corinne Mallet started this collection in 1984 and continues its development.

Some plants in this collection are unique to the western world. They most frequently come from Japan, the birthplace of a large number of hydrangea species. The collection is organised into two areas. In the first, each bed is devoted to a species, classified by country or region. This arrangement allows the world of hydrangeas to be easily understood and makes the Shamrock collection a living museum. The beds are given the shade necessary to most hydrangeas by the planting of buddleias and paulownias. The second area is wooded: “the Green Dragon Wood “where the Asian undergrowth species are grown.

Visitors are given a colour guide to accompany their visit and when the visit is over they can take advantage of explanation and advice from Corinne Mallet

Translation: Alison Dufour

Address :
Jardin Shamrock Collection nationale d'hydrangéas CCVS route du Manoir d'Ango 76119 Varengeville sur Mer.
Phone : (33) 2 35 85 14 64. Fax : 02 35 85 30 20 - e-mail :
Website :

contact Réalisation PhP Consultant : 06 60 78 08 37 - - © Mairie de Varengeville sur Mer Mentions légales