• 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

Plants

Broad bean 'Crimson Flowered'

Beans with blooms

As we all increasingly enjoy edibles with colourful foliage or flowers, beans are the perfect choice as ornamental vegetables, says plantsman Graham Rice

Annuals

Perennials

Trees

Shrubs

Bulbs

Herbs

Fruit

Vegetables

Greenhouse

Climbers

Plants for pollinators

Plant awards

Ryan Bodsworth (RHS Staff) avatar

Clematis reach new heights at Wisley

by Ryan Bodsworth

A trial of these popular garden climbers is given attractive new supports for ...

Read more about Clematis reach new heights at Wisley

RHS Plant Trials and awards

Every year we trial dozens of plants to find out how they will perform in your garden. The very best are awarded the RHS Award of Garden Merit (AGM).

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Trialling plants at Wisley