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RHS Award of Garden Merit Clematis

Here are all the clematis we stock which have achieved theRHS AGM Logo
Royal Horticultural Societies Award of Garden Merit.
This award is given to plants that have been submitted to the RHS for trial and proven to be particularly good garden worthy plants under a number of factors, including flowering ability, strength, disease & pest resistance. At Thorncroft we would only select and indeed sell clematis that we believe have these qualities but the AGM is a helpful guide to selecting excellent plants.

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  1. Clematis 'Ascotiensis'

    Clematis 'Ascotiensis'

    £11.25

    Out of stock

    Clematis Ascotiensis is a wonderful old cultivar, introduced in the late 1800's is still one of the best and easiest mid mauvey-blue clematis for the garden. Learn More
  2. Comtesse de Bouchaud

    Clematis 'Comtesse de Bouchaud'

    £11.25

    The mid pink flowers of this wonderful old clematis have a pretty satin sheen. The clarity of colour and simplicity of shape are what gives it such charm. Awarded the RHS Award of Garden Merit.

    Learn More
  3. Daniel Deronda

    Clematis 'Daniel Deronda'

    £11.25

    The lovely rich bluey-purple flowers have paler, almost mauve bars. The early flowers are occasionally semi-double. Awarded the RHS Award of Garden Merit. Learn More
  4. Ernest Markham

    Clematis 'Ernest Markham'

    £11.25

    The light magenta-red blooms have a deeply textured surface and beautifully crimped margins. A fabulous companion to climbing roses and, if hard pruned can be grown in a patio container. Learn More
  5. Clematis 'Gillian Blades'

    Clematis 'Gillian Blades'

    £11.25

    Out of stock

    The elegant white star-shaped blooms have the palest bluey-mauve very ruffled margins. Absolutely gorgeous! Awarded the RHS Award of Garden Merit. Learn More
  6. Clematis 'Huldine'

    Clematis 'Huldine'

    £11.25

    These elegant satin-white blooms have an almost transparent, pearly appearance, due to their attractive mauve reverse being an apparent feature. An excellent candidate to add interest to your garden in autumn. Awarded the RHS Award of Garden Merit. Learn More
  7. Clematis 'Jackmanii'

    Clematis 'Jackmanii'

    £11.25

    A quintessential 'cottage garden' flower, whose gently nodding bluish-purple blooms look amazing when combined with climbing roses, or clambering over a porch or arch. Awarded the RHS Award of Garden Merit. Learn More
  8. John Huxtable at RHS Wisley Trials grounds

    Clematis 'John Huxtable'

    £11.25

    Out of stock

    The pretty white flowers are deeply textured and have a wonderful satin sheen. This popular clematis is perfect to brighten any dull spot in your garden. Awarded the RHS Award of Garden Merit. Learn More
  9. Clematis 'Ken Donson'

    Clematis 'Ken Donson'

    £11.25

    Elegant flowers of mid-blue have bright yellow anthers in the centre and make the flower really stand out in the garden. A classic family favourite. Learn More
  10. Clematis 'Lasurstern'

    Clematis 'Lasurstern'

    1 Review(s) | Add Your Review

    £11.25

    The rich mid blue star-shaped flowers have wavy margins and contrasting yellow stamens. Awarded the RHS Award of Garden Merit. Learn More
  11. Marie Boisselot

    Clematis 'Marie Boisselot' (Mme Le Coultre)

    2 Review(s) | Add Your Review

    £11.25

    Out of stock

    The beautiful upward-facing blooms open creamy-white, turning to pure white as they mature and have golden stamens. A beautiful old cultivar from the early 1900’s. If hard pruned can be grown in a patio container. Awarded the RHS Award of Garden Merit. Learn More
  12. Mrs Cholmondeley

    Clematis 'Mrs Cholmondeley'

    £11.25

    The wonderful light mauvy-blue flowers have pale coffee-coloured anthers. A fabulous old cultivar which, if hard pruned, can be grown in a patio container. Cholmondeley is pronounced Chumley. Awarded the RHS Award of Garden Merit. Learn More
  13. Clematis 'Mrs George Jackman'

    Clematis 'Mrs George Jackman'

    £11.25

    Out of stock

    The classic pure white blooms have a satin sheen and crown of coffee-coloured stamens. The early blooms are occasionally semi-double. Awarded the RHS Award of Garden Merit. Learn More
  14. Clematis 'The President'

    Clematis 'The President'

    2 Review(s) | Add Your Review

    £11.25

    This handsome old clematis has deep purply-blue star-shaped flowers with slightly paler bars and attractive beetroot-red stamens. Try growing this with 'The First Lady' as they make a charming colour combination! Learn More
  15. Clematis 'Warszawska Nike'

    Clematis 'Warszawska Nike'

    £11.25

    Out of stock

    (syn. 'Warsaw Nike') The wonderful rich reddy-purple blooms mature to bluey-purple and have beautifully contrasting yellow stamens. Pronounced Var-sharv-ska Nee-ka. Awarded the RHS Award of Garden Merit. Learn More
  16. ALABAST™ 'Poulala'

    Clematis ALABAST™ 'Poulala'

    1 Review(s) | Add Your Review

    £11.25

    Out of stock

    The newly opened flowers are pale primrose yellow with a deeper bar and satin sheen, they mature to soft creamy-white. Ideal for growing in the shade. Unlicensed Propagation Prohibited. Learn More
  17. Clematis alpina 'Constance'

    Clematis alpina 'Constance'

    £11.25

    Out of stock

    The semi-double nodding, bell-shaped flowers are deep reddish-pink. Awarded the RHS Award of Garden Merit. Deciduous climber. Requires free draining soil. Learn More
  18. Clematis alpina 'Frances Rivis'

    Clematis alpina 'Frances Rivis'

    £11.25

    Out of stock

    The deep, rich blue nodding bell-shaped flowers have a white inner skirt. Awarded the RHS Award of Garden Merit. Deciduous climber. Requires free draining soil. Learn More
  19. Clematis alpina 'Frankie'

    Clematis alpina 'Frankie'

    £11.25

    Out of stock

    Deep mauve-blue single nodding bell-shaped flowers with a creamy-white inner skirt. Awarded the RHS Award of Garden Merit. Requires free draining soil. Learn More
  20. Clematis alpina 'Helsingborg'

    Clematis alpina 'Helsingborg'

    £11.25

    Out of stock

    The single nodding bell-shaped flowers are deep bluey-purple. Awarded the RHS Award of Garden Merit. Requires free draining soil. Learn More

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