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barrel cactus

Discussion in 'Cacti and Succulents' started by Howie, Jan 8, 2007.

  1. Howie

    Howie Apprentice Gardener

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    Hi I have a golden barrel cactus, It's about 16" diameter, I've had it about 2 years and have noticed some white spots on it ,also where the spikes join the cactus it is turning brown plus it is turning pale yellow instead of its green colour. can you help
     
    Howie, Jan 8, 2007
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  2. Marley Farley

    Marley Farley Affable Admin! Staff Member

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    [​IMG] Hi Howie & Welcome..
    [​IMG] Could you post a photo of the cacti.? It would be easier to see the problem & give you an answer.. [​IMG]
     
    Marley Farley, Jan 8, 2007
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  3. Howie

    Howie Apprentice Gardener

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    how do you post a photo
     
    Howie, Jan 8, 2007
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  4. Howie

    Howie Apprentice Gardener

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    Howie, Jan 8, 2007
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  5. Marley Farley

    Marley Farley Affable Admin! Staff Member

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    You have obviously done it all right at the photo bucket end.. Right click your mouse on the url code under your picture in photobucket & click copy.. Then... Start your reply by clicking "fullreply"...
    When you are ready to insert the picture in your text .. Click on "image" In the list below, under Instant Ubb code.....
    When the box pops up click in the text box delete the http bit already in there, then right click your mouse & paste your photobucket code in there Then click ok.. Then preview, & you should get this.. " [​IMG]
     
    Marley Farley, Jan 8, 2007
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  6. Marley Farley

    Marley Farley Affable Admin! Staff Member

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    Hope the garbled instructions help.. Somewhere though on the site there is a section on posting photos but can't find it at the moment.. I expect somebody will find it fot you..
    I would say you either have a nutrient problem, which could be caused by the soil or just tired compost if you haven't fed it at all.. Or if you have re-potted did you use cacti type compost.. ie. fairly gritty & free draining..?? Or a watering or light problem.. There are one or two experts on here who will probably be around later who might have a better idea... ;) :D
     
    Marley Farley, Jan 8, 2007
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  7. Hornbeam

    Hornbeam Gardener

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    I would guess that is has been over watered and kept too dark. Cacti need sharp drainage and sunshine
     
    Hornbeam, Jan 8, 2007
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  8. pete

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

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    I think Hornbeam is right Howie.
    That kind of cactus needs strong sunshine, does it live in the house and on that desk?
    It should in the very least be on a sunny window sill, very little if any water at this time of the year and a repot in April or May perhaps, when you can give it a little more water.
    Cant make out the white spots but they could be mealy bugs.
     
    pete, Jan 8, 2007
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  9. geoffhandley

    geoffhandley Gardener

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    I would go for mealy bug for white spots. Now can't you wipe them with something that gets through the waxy coat and poisons them? Does anyone know what it is that you can use?
    Where have you kept it? My cactus are kept in a conservatory that is pretty cool in winter and they are kept bone dry. No watering unbtil things warm up in spring....and full light.
     
    geoffhandley, Jan 8, 2007
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  10. garden_fiend

    garden_fiend Gardener

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    Looks like mealy bug. I was told to use methylated spirit on a cotton bud. Haven't tried it yet as I was not sure about it, so when I see any I just use a damp cotton bud to wipe them off.
    You can buy a mealy bug killer (Provado do it) if you don't mind using chemicals.
     
    garden_fiend, Feb 15, 2007
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  11. pete

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

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    Meths is the method of old gf, I've never tried it either.
    Come to that I've never had mealy bugs on anything.
     
    pete, Feb 16, 2007
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  12. garden_fiend

    garden_fiend Gardener

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    Not sure if they do much damage.You get them mainly on cacti and succulents grown under glass I think.It looks like little bits of cotton wool, and inside is a little bug that goes orange when you squidge it. [​IMG]
     
    garden_fiend, Feb 16, 2007
    #12 Quote in Conversation
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