• 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

Chris le Lere (RHS Staff) avatar

To discuss hibiscus

by Christopher le Lere

Preparations are underway for a riot of summer colour on the trials field, with ...

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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