Rhododendron cultivar registration

The RHS is the International Cultivar Registration Authority for the genus Rhododendron.


Download registration forms here:

Application form to register a Rhododendron cultivar name


The RHS publishes The Rhododendron Register and Checklist 2004 and subsequent supplements, some of which are available from the link below.

Rhododendron registers and supplements 

Gardening with the RHS

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The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.