• 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

FInd out all the latest news from the plant trials at RHS Garden Wisley.

Latest posts from this blog

  • Promoting AGM Plant Trials at ...

    By Debbie Roe
    Past, present and future of plant trials on show

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  • Zingy zinnias bring floral fireworks

    By Kirsty Angwin
    Join us as we light the touchpaper for a sizzling display of floral fireworks at Wisley this ...

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  • Hardy orchids on trial

    By Andrew McSeveney
    They might look like tender tropicals, but lady's slipper orchids are thriving outdoors at ...

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  • Get set, sow!

    By Debbie Roe
    Preparations for a new year of trials involve mountains of seed and a healthy measure of ...

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  • Bark and blooms on trial

    By Eva Erhart
    Collaring the best dogwoods and judging geums

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  • Getting through the winter

    By Eva Erhart
    Here in the trials department we grow a range of plants, both hardy and tender - and there are ...

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  • A touch of the white stuff

    By Andrew McSeveney
    An early Christmas present arrived today in the form of a hot water treatment tank to help the ...

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  • And the winner is...

    By Debbie Roe
    The people have spoken! As the pelargonium trial at Wisley draws to a close, results are in ...

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  • Grow your own... amphitheatre

    By Richard Eborn
    Our cheery sunflower amphitheatre has captured the imagination of staff and visitors alike

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  • Lowry joins the Greening Grey Britain ...

    By Debbie Roe
    A new RHS exhibit at Hampton Court Flower Show inspired visitors to green their grey ...

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  • Late spring hits plant trials

    By Karen Robbirt
    Some trials are running three weeks behind thanks to the weather

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  • Chelsea: the secret world of floral ...

    By Kirsty Angwin
    There's always much excitement, pomp & ceremony around the build-up to Chelsea show ...

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