Mark of quality awarded to garden plants by the British Royal Horticultural Society
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Royal Horticultural Society Award of Garden MeritTrials field at the RHS Garden Wisley, showing some of the hundreds of varieties assessed for the Award of Garden Merit
The Award of Garden Merit (AGM) is a long-established annual award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performance under UK growing conditions.