• AGM plants

    AGM plants have been through a rigourous 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

Plants that perform

You will probably have seen the RHS Award of Garden Merit logo (right). A cup symbol on a plant’s label shows that it has earned the AGM – it's our seal of approval that the plant performs reliably in the garden. Awards are usually given after a trial period at an RHS Garden, often Wisley, and are judged by our expert forums and advisory groups.

What is the AGM?

With more than 65,000 plants available in RHS Plant Finder alone, how can you tell which plants are best for all-round garden value? The RHS Award of Garden Merit (AGM) is intended to help gardeners make that choice, and is only awarded to plants that are:

  • excellent for ordinary use in appropriate conditions
  • available
  • of good constitution
  • essentially stable in form and colour
  • reasonably resistant to pests and diseases

Awarding the AGM

Awards are only made after assessment by one or more RHS plant committees or advisory groups. Assessments often include a period of trial, which usually takes place at one of the four RHS Gardens. Each committee has its own area of expertise, and draws upon the experience of a wide range of experts, including nurserymen, specialist growers and well-known horticulturists.

What kind of plant is awarded the AGM?

Plants of all kinds can be considered for the AGM, including fruit and vegetables. The list currently includes more than 7,000 plants, but new awards are made each year to keep the
award list as up to date as possible.

The AGM review

Unlike other RHS plant awards, the AGM is subject to regular review, to make sure that every plant still merits its place on the list. The first review took place in 2002: more than 1,300 plants that no longer met the AGM criteria lost the award, while 900 plants were added to the list. In the second review, in 2012, some 1,900 plants were removed from the list, and 1,600 were added. From 2013, reviews will be conducted annually.

The AGM logo

The RHS Award of Garden Merit trophy symbol is used throughout the horticultural trade, by nurseries, garden centres and online plant and seed suppliers, as well as in catalogues, books and magazines.

Buying plants with the AGM

It's easy to find and buy AGM plants:

  • Look out for the AGM logo next time you are in the garden centre or nursery
  • Download the AGM lists to see which plants have the AGM
  • Search for plants in our Plant Selector
  • Search for AGM plants in our RHS AGM Plant Search

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