Cactus update

Discussion in 'Cacti and Succulents' started by Phil A, Mar 30, 2018.

  1. pete

    pete Growing a bit of this and a bit of that....

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    Well, I must admit, I thought the top part was a cactus, but I was slightly suspicious about the rootstock, it did have a bit of a Euphorbia look about it:scratch:
    So that has sorted it @Tetters.

    Neither part is a cactus.

    Its a Euphorbia.:biggrin:
     
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    • Phil A

      Phil A Gardener

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      Thats going on the compost heap then, and will be suing B&Q for mis selling and false advertising :th scifD36:

      DSCF0569.JPG
       
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      • pete

        pete Growing a bit of this and a bit of that....

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        Yeah well, B&Q, your lucky, they took a stab at it being a Cacti.

        Often it just says "green plant, water when dry, dont put in direct light":biggrin:
         
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        • Ned

          Ned Evaporated

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          No, no no....:doh: @pete ...I think the root stock is a bit of cactus with a bit of fasciated 'thingy' stuck in the top :thud:
           
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          • Phil A

            Phil A Gardener

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            • PaulB3

              PaulB3 Gardener

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              A typical case of convergent evolution ; Cacti and Euphorbias have evolved to their own environments over several million years . Compare the attributes of Astrophytum asterias to Euphorbia obesa , similar looking but from a completely different taxa .
              Assuming present day S.America and Africa were once one land mass , the ancestors of these plants adapted accordingly to their relatively harsh environments as the continents drifted apart .
              Cacti are thought to have evolved about 25 million years ago .
              In the most extreme droughts , nothing will attack or feed on the Euphorbias due to the corrosive sap ; cacti rely mainly on spination for protection .
              A common fallacy is to think that cacti are all desert plants ; Frailea and Blossfeldia spp. grow alongside grasses and other plants in areas of moderately high rainfall ; Uebelmannia and Buiningia grow in hot humid forests in Brazil in virtually pure quartz sand .

              Not easy requirements to replicate in cultivation !!

              If you want decent plants , don't rely on B & Q :biggrin: ; there are quite a few specialist nurseries in the UK supplying named species .
               
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              • PaulB3

                PaulB3 Gardener

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                F*****g hell ; I'm ranting on again !:sad:
                 
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                • pete

                  pete Growing a bit of this and a bit of that....

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                  I'd just like to say, succulent Euphorbias are not cacti, they have thorns rather than spines I believe.
                  And only Cacti have Areoles.:biggrin:
                   
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                  • PaulB3

                    PaulB3 Gardener

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                    Whilst working at Whitestone Nurseries in the 80s , I once had the misfortune to get Euphorbia sap in my left-eye ; NEVER AGAIN!!!.....believe me , it hurts :frown: .
                    I'd rather have been 'kicked up the areole' Pete !:snorky:
                     
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                    • Phil A

                      Phil A Gardener

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                      :snorky:
                       
                    • Ned

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                      [​IMG] You ain`t 'arf clever @PaulB3




                      I usually refer to 'those' things as warts Pete :snorky:
                       
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                      • PaulB3

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                        Tetters
                        I can feel my head swelling already ! :heehee:
                         
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                        • PaulB3

                          PaulB3 Gardener

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