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Dendrobium amethystoglossum

This is a discussion on Dendrobium amethystoglossum within the Cattleyas, Vandas, Dendrobiums IN BLOOM forums, part of the Orchid Photography category; Originally Posted by eircsmith It seems to be great tips; I hope it should be ...

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  1. #11
    Dorsetman's Avatar
    Dorsetman is online now Senior Member
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    Quote Originally Posted by eircsmith View Post
    It seems to be great tips; I hope it should be effective. Thanks “Dorestman” for reply. Can you please prefer some nutrients or fertilizer?
    I have not stopped to look up your profile ; it may be that anything I suggest is unobtainable where you live; and again it depends on what you use for water. If rain, and clean, then any general purpose hydroponics fertiliser, probably made up much weaker than suggested for other plants. I check the pH ( range required is 5.8-6.5 according to the point in the growing season - higher for growth, lower for flowers) and EC - max 600 when in growth, no more than 150 if not. But I would give you similar answers for any orchid.

  2. #12
    Rinaldy Nasrul is offline Senior Member
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    So beautiful. I can not grow this, too hot at my location

  3. #13
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    A healthy looking plant there, good growing!
    And yes, it's from the Philippines and likes it cooler.

  4. #14
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    Hi,

    I was wondering how long your blooms last? The last time my den. amethyst. bloomed, it lasted about a week. And do you know any ways to prolong the blooms for..oh say...10 days?
    Thanks!

    Really gorgeous blooms!

  5. #15
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    Quote Originally Posted by Dorsetman View Post
    I have not stopped to look up your profile ; it may be that anything I suggest is unobtainable where you live; and again it depends on what you use for water. If rain, and clean, then any general purpose hydroponics fertiliser, probably made up much weaker than suggested for other plants. I check the pH ( range required is 5.8-6.5 according to the point in the growing season - higher for growth, lower for flowers) and EC - max 600 when in growth, no more than 150 if not. But I would give you similar answers for any orchid.
    Thanks “Dorestman” for reply. It’s an informative reply for growing orchids. There are some nutrients to balanced pH in market. Have you used or refer some nutrients for me.

  6. #16
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    Great tips there Eric, thanks Geoff for keeping posted. I understood the pH bit but that does this refer to? "EC - max 600 when in growth, no more than 150 if not"
    And how can one check this?

  7. #17
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    Ec = electrical conductivity. Imagine water stuffed with somuch copper sulphate as to be a solution of copper .it might conduct electricity very well. Now cut down on the copper, bit by bit, and you reduce the conductivity. How is rhis relevant ? In damp soil, the plants roots act like some part of an electroplating cell, and heavy metals are attracted, so that ions travel through the water (which technically is an electrolyte ). The heavy metals are poisonous to plants. Higher conductivity raises the poisons level...
    Read EC with a meter -google Hanna , and look for a combination meter reading pH and EC. Or look for Extech Instruments ExStik II - thats the one I am using currently which has the advantage of being self-calibrating, and in UK with our horrendous sales tax costs about 100 pounds. Cheaper everywhere else in the world I expect.
    I will not add any fertiliser to water without using a meter, so as to know exactly what I am giving plants, and if the water is not rain water, then that is doubly true.
    Last edited by Dorsetman; February 8th, 2013 at 07:17 AM.

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    Beautiful plant Haven;'t got mine in bloom yet so your advice as mentioned above is very welcome. Conditions in my greenhouse are similar to yours so I still have hope to get it going.

    Jan

  9. #19
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    Quote Originally Posted by Gurj View Post
    Great tips there Eric, thanks Geoff for keeping posted. I understood the pH bit but that does this refer to? "EC - max 600 when in growth, no more than 150 if not"
    And how can one check this?
    Thanks for reply “Gurj”. There are some measuring meters in market to check pH, PPM and EC.

  10. #20
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    Quote Originally Posted by Dorsetman View Post
    Ec = electrical conductivity. Imagine water stuffed with somuch copper sulphate as to be a solution of copper .it might conduct electricity very well. Now cut down on the copper, bit by bit, and you reduce the conductivity. How is rhis relevant ? In damp soil, the plants roots act like some part of an electroplating cell, and heavy metals are attracted, so that ions travel through the water (which technically is an electrolyte ). The heavy metals are poisonous to plants. Higher conductivity raises the poisons level....
    Thanks for an informative reply regarding electrical conductivity (EC).

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