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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. Durandii
    £11.25
    The gorgeous rich indigo blue flowers are semi-nodding and have contrasting pale yellow anthers. Semi-herbaceous, non-clinging, semi-climber or scrambler. Awarded the RHS Award of Garden Merit. Learn More
  2. Clematis 'Joe'
    £13.50
    The white 'male' flowers have pale yellow stamens. An evergreen with prostrate growing habit or can be trained vertically if desired, requiring free draining soil. Learn More
  3. Clematis viticella 'Walenburg'
    £13.50
    The semi-nodding deep purply-red flowers have a creamy-white centre and contrasting purply-red anthers. When in full bloom this clematis makes a breathtaking sight. Absolutely lovely! Awarded the RHS Award of Garden Merit. Learn More
  4. Clematis viticella 'Prince Charles'
    £11.25
    This gorgeous blue clematis opens light azure blue with a hint of pink along the central bar. As the blooms mature they become more mauve-blue, losing the pink tint. An outstanding performer! Awarded the RHS Award of Garden Merit. Learn More
  5. Clematis viticella 'Madame Julia Correvon'
    £11.25

    The glorious vibrant red flowers have a textured surface and gently recurved, twisted tips. Their distinctive crown of contrasting yellow stamens adds to the attraction of this outstanding performer. Awarded the RHS Award of Garden Merit.

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  6. Clematis texensis 'Princess Diana'
    £13.50
    This eye-catching clematis has rich deep pink trumpet shaped flowers with paler mauve-pink margins. A 'classy' addition for your garden. Awarded the RHS Award of Garden Merit. Learn More
  7. Clematis tangutica GOLDEN TIARA® 'Kugotia'
    £12.50
    Attractive bright golden-yellow nodding lantern-shaped flowers have distinctive contrasting reddish-purple stamens and leave silky seedheads. Requires free draining soil. Awarded the RHS Award of Garden Merit. Unlicensed Propagation Prohibited. Learn More
  8. Clematis PETIT FAUCON™ 'Evisix'
    £11.25
    The nodding to outward facing flowers have four rich bluey-purple tepals. The stamens have rosy-purple filaments and golden yellow anthers. Semi-herbaceous, non-clinging, semi-climber or scrambler. Learn More
  9. ARCTIC QUEEN™ 'Evitwo'
    £16.00

    These magnificent pure white blooms are fully double in early summer, whereas later in the summer they are semi-double. 

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  10. ANNA-LOUISE™ 'Evithree'
    £16.00
    The fabulous bluey-purple star-shaped flowers have a bright cerise bar and a striking crown of contrasting stamens. Learn More
  11. Clematis alpina 'Helsingborg'
    £11.25
    The single nodding bell-shaped flowers are deep bluey-purple. Awarded the RHS Award of Garden Merit. Requires free draining soil. Learn More
  12. Clematis alpina 'Frankie'
    £11.25
    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
  13. Clematis alpina 'Frances Rivis'
    £11.25
    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
  14. Clematis alpina 'Constance'
    £11.25
    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
  15. Clematis 'Warszawska Nike'
    £11.25
    (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. Clematis 'Mrs George Jackman'
    £11.25
    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
  17. 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
  18. Marie Boisselot
    £11.25
    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
  19. John Huxtable at RHS Wisley Trials grounds
    £11.25
    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
  20. Clematis 'Gillian Blades'
    £11.25
    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

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