• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Registration

Download registration forms here:

Application form to register a Dahlia cultivar name

Publications

The RHS publishes The International Register of Dahlia Names 1969 (1995 reprint) and subsequent supplements, some of which are available as downloads from the link below.

Dahlia registers

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RHS Membership

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We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.