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Classification of Clematis

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  • BijdezeeBijdezee Posts: 1,484
    edited August 2019
    Agree totally about Montana. 

    As for the other one I would use the standard advice of pruning after it has flowered or leaving it completely until you know for sure what group it's in. Sounds like a group 2.
  • MarlorenaMarlorena Posts: 8,705
    edited August 2019
    ...perhaps @Voyagerxp can get back to us next Spring to inform whether it does flower much in Spring... I'm inclined to think it's made for greenhouse culture for early flowering...
    ..strange how it got put into the viticella group.... seemly due to Christopher Grey-Wilsons ideas of it..  he was a research botanist at Kew, plant hunter and writer... 

    'Sugar Sweet Blue' ['Magical Scent' breeders code CAD002]
    https://www.helpmefind.com/clematis/l.php?l=2.82908.3

    'Sugar Sweet Lilac' [Delightful Scent'/'Magical Perfume' breeders code CAD001]
    https://www.helpmefind.com/gardening/l.php?l=2.82909.1

    ..bred Tom Hannink, 2011... sister seedlings from Clematis cadmia...
    East Anglia, England
  • At the moment clematis are placed in relevant Group when Registering, based on parentage, Montana group, Tangutica Group, Viticella Group, etc. One of the parents of the new cultivar has to be wholly or partly a Viticella, to be placed in Viticella Group, for example, seed from Etoile Violette with pollen from another plant, could be included in Viticella Group. This is a free service offered by our own RHS.  However several breeders will not declare parentage, for reasons of their own, and put the plants in a Group of their choice, the Registrar accepts this. However changes are on the way, attempts are being made to discard this system and replace it with a newer classification, based on appearances. These are some of the proposals, Abundant Summer Flowering Group, Summer Dormant Clematis Set, Sub-Shrubby Erect or Scrambling Clematis Set, Climbing American Bell Group.  16 new Groups or Sets are proposed, I was asked to road-test them on my nursery customers, what do you think my answer was ?
  • MarlorenaMarlorena Posts: 8,705
    ….unprintable?...  
    East Anglia, England
  • ObelixxObelixx Posts: 30,090
    Sounds horrid and very unwieldy   All you really need to know about a clematis to choose if for your garden are colour and flower form, obviously, but then flowering time, pruning regime, best aspect and hardiness.   

    Perfume if you're really interested but of all the permumed ones I've met or grown the only ones that stand out are the almond ones.  Betty Corning, Lambton Park, Jan Fopma and so on are lovely but so subtle you have to get really close to a flower.
    Vendée - 20kms from Atlantic coast.
    "The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
    Plato
  • FairygirlFairygirl Posts: 55,117
     I was asked to road-test them on my nursery customers, what do you think my answer was ?
    Two words - the second one being 'off' ?

    I noticed there was a lot of info from America. Perhaps in certain states/zones, the weather plays a bigger part on how quickly something pruned back late winter/early spring might grow and flower, as opposed to here in the UK?
    It's a place where beautiful isn't enough of a word....



    I live in west central Scotland - not where that photo is...
  • Fairygirl said:
     I was asked to road-test them on my nursery customers, what do you think my answer was ?
    Two words - the second one being 'off' ?

    I noticed there was a lot of info from America. Perhaps in certain states/zones, the weather plays a bigger part on how quickly something pruned back late winter/early spring might grow and flower, as opposed to here in the UK?
    Too true about America, such a huge country, and really exciting research is being documented, funded by British Clematis Society.  Several new species have been discovered plus lots of different forms of known species in the wonderful Viorna Group. I am amazed at the variations in some of these species, each form a really good garden plant, hardy over here, Summer flowering, followed by amazing seedheads. Well worth joining BCS to read some of the articles in the Journal due to be published soon.  PS. Not sure if the Americans are aware of what they have on their doorsteps.
  • VoyagerxpVoyagerxp Posts: 651
    I will get back to this thread next year when its flowered, thanks for the info guys.
  • VoyagerxpVoyagerxp Posts: 651
    Marlorena said:
    ...perhaps @Voyagerxp can get back to us next Spring to inform whether it does flower much in Spring... I'm inclined to think it's made for greenhouse culture for early flowering...
    ..strange how it got put into the viticella group.... seemly due to Christopher Grey-Wilsons ideas of it..  he was a research botanist at Kew, plant hunter and writer... 


    Well back and its flowered in the spring and is still flowering, the group 3 this is supposed to be in seems wrong.
  • ObelixxObelixx Posts: 30,090
    Well, the consensus was for group 2 which fits better.
    Vendée - 20kms from Atlantic coast.
    "The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
    Plato
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