• 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

Plant trials & awards

A helping hand for gardeners

See how we run our plant trials and the RHS Award of Garden Merit (AGM)

Kirsty Angwin (RHS Staff) avatar

Zingy zinnias bring floral fireworks

by Kirsty Angwin

Join us as we light the touchpaper for a sizzling display of floral fireworks ...

Read more about Zingy zinnias bring floral fireworks

RHS Plant Trials

Trial plants are submitted by nurseries, individuals and breeders.

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Plant awards

At the RHS, we assess garden plants based on their consistency, reliability and excellence for ordinary garden use. See which ornamentals, fruit and vegetables have received the RHS Award of Garden Merit.

New AGM lists

See the most recent AGM lists of plants.

AGM lists