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Cactus identification

dvicary01dvicary01 Posts: 5
in Plants

I bought the cactus below in a garden centre and was wondering whether anyone could help with identifying which species it is. The label says Trichocereus  but I was hoping to get a more specific identification so that I could find out about its tolerance to cold. I want to keep it an unheated conservatory. A Echinocactus Grusonii has been thriving in the conservatory for 10 years or so.

I have attached  2 photos – one a view from the top where the 8 lines of thorns can be seen. For an idea of scale the cactus (excluding the pot) is 12 ins tall.

Thanks a lot 

Dave


Posts

  • hogweedhogweed Posts: 4,053
    It should be fine in an unheated conservatory as long as its dry.
    'Optimism is the faith that leads to achievement' - Helen Keller
  • dvicary01dvicary01 Posts: 5
    Thanks for that - do you know what it is?
    Dave
  • wild edgeswild edges Posts: 10,497
    I think even an expert would need more to go on but have a look at the link below and see if that helps.

     http://www.lycaeum.org/leda/docs/16084.shtml?ID=16084
    If you can keep your head, while those around you are losing theirs, you may not have grasped the seriousness of the situation.
  • dvicary01dvicary01 Posts: 5
    Thanks a lot - I didn't realise it was so complicated!
  • Paul B3Paul B3 Posts: 3,154
    A very variable species , a lot depending on its original seed collection !
    Echinopsis (Trichocereus) bridgesii fits the bill .
    You can't ID a cactus by the number of lines (ribs) , as they will increase as the plant grows , and the spination should get stronger .

    Sorry to be negative here , but don't expect flowers on your E.grusonii !
    It has never been known to flower in N.Europe; nothing you've done , just the light intensity and daylength isn't enough .
  • Paul B3Paul B3 Posts: 3,154
    PS  Meant to say the 'consistency' of daylength .
  • dvicary01dvicary01 Posts: 5
    Paul,
    thanks for your post. Having gone through the process suggested by Wild Edges my best guess was a Bridgessi which is also your thoughts so I think I will stick with that. I am happy now that it will be OK in the conservatory during the winter

    Many thanks to everyone for your helpline 

    Dave
  • dvicary01dvicary01 Posts: 5
    Just noticed the last word should have said “help” - that’s predictive text for you!!
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