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fertilizers and urea

This is a discussion on fertilizers and urea within the General Orchid Culture forums, part of the Orchid Culture category; ok, so I have a question...what is the verdict on orchids and fertilizers containing urea ...

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  1. #1
    ATester's Avatar
    ATester is offline Minster of Silly Flasking
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    May 2005
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    Default fertilizers and urea

    ok, so I have a question...what is the verdict on orchids and fertilizers containing urea based nitrogen? Good/bad or doesn't matter?

  2. #2
    uncasteeb's Avatar
    uncasteeb is offline Senior Member
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    Jul 2004


    Fert,s that have urea based nitrogen are normally not reccomended for orchids.I haven,t tried any so can,t say if it,s just "popular myth" or true.

  3. #3
    Gin's Avatar
    Gin is offline Senior Member
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    I don't know either . I used urea based Fert. for a number of years and did not have any problems . Gin

  4. #4
    Rence is offline Senior Member
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    There is no problem in using high in nitrogen fertilizer in orchids as long as they are in their "active" stage. mostly young orchids

  5. #5
    Jmoney's Avatar
    Jmoney is offline Senior Member
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    supposedly urea takes a while to be broken down into usable nitrogen (bacteria do this). for many orchids, the urea is theoretically flushed out of the pot way before this process can happen. that is the reasoning why people say to avoid urea-containing fertilizers. not so much that it causes harm, but that it doesn't produce usable nitrogen.

    then again I see people growing perfectly good plants with peters 20-20-20.

    I personally use dynagro, which does not contain urea. I bought a stash a while ago and haven't purchased fertilizer in like 8 years.

  6. #6
    JB_Orchidguy's Avatar
    JB_Orchidguy is offline Senior Member
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    Jason is correct. I don't think that it is because it will hurt the plants. The issue is just as Jason said the urea will not be able to be used by the plant because the nature of the growing media moast orchids are gorwn in does not contain the proper nitrogen fixxing batceria to process the urea and turn it into usefull nitrogen for the plant. Those tyles of bacteria are found in soil based potting mixxes. So for them to be effective you want to use a urea free firt to have a benefit from the nitrogen.

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