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Aussie Dendrobium Speciosum repot

This is a discussion on Aussie Dendrobium Speciosum repot within the New Growers: Ask the Senior Members forums, part of the New Growers category; ...

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  1. #1
    Joodles is offline Junior Member
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    Default Aussie Dendrobium Speciosum repot

    Hi all

    I am looking for some advice on my Dendrobium Speciosum.
    Is it ok to repot at this time of year mid autumn? It seems to be in growth.
    Iíve had it for a few years and this is the first time it might flower for me.

    Photo 2: Has 3 new growths developing and a few roots. One growth might get trapped on the side of the pot. Hence my thought it would be best to repot.

    Photo 3: Buds developing. Will they stall if I repot?

    Photo 4: Is it a Keiki or just a tiny growth due to no strength on that side of the plant? Also some roots which may be dying back. I have since covered them with a bit of spag to retain some moisture.

    Photo 5: what are the sunken pits on my leaves. I cannot see any scale. I thought it might be marks they can naturally get on older leaves but I think this is definitely something else.

    AND...still more questions. I promise Iím nearly finished
    When I repot, do I leave the old canes on to drop off naturally or remove and apply cinnamon? I think they also have been sunburnt.

    Do I cut of the bottom third of the roots to stimulate new growth as Gerry Walsh The rock Lily man suggests. You should see him in action with his hatchet!

    Thanks for your help.
    Jude

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  2. #2
    raybark's Avatar
    raybark is offline Senior Member
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    Default

    The best time to repot any orchid is just when new roots are emerging - with those new growth coming, I'd say your timing is pretty good.

    Frankly, I doubt that plant is quite mature enough to bloom, based upon my experience with D. speciosum v.hillii. Given to me as a 7 cm plant in a 5 cm pot, it didn't bloom until the canes were about 75 cm tall.

    I can see no benefit in trimming undamaged roots. In 45 years of growing, I've never done that...

  3. #3
    Joodles is offline Junior Member
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    Thanks for your advice Ray.
    I better get cracking

  4. #4
    Roy's Avatar
    Roy
    Roy is offline Senior Member
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    Default

    Looking at the plant & what I can see of the mix it does what repotting. I would pull it out of the pot & check the roots. Remove as much of any dead roots & canes as best as possible without major disturbance & get it into a much large pot with a good, coarse bark & charcoal 75% - 25% if you can or just straight bark. Don't bury the base of the canes either, even allow them to be slightly higher than the mix by 1 or 2 cms. There shouldn't be any great problem with the plant give the area where you live. A root stimulant fert' could be used for a month or so then left off for a proper orchid fert'. Weakly, weekly is the key. Good strong light without burning, on a bench, not the ground & where wind would knock the plant about.

  5. #5
    Joodles is offline Junior Member
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    Thanks Roy. I appreciate your help also.

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