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liquid organic fertilizer for orchids

This is a discussion on liquid organic fertilizer for orchids within the General Orchid Culture forums, part of the Orchid Culture category; Hi all. I have been growing my orchids strictly organic for the last year now. ...

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  1. #1
    JMKentzel is offline Junior Member
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    Default liquid organic fertilizer for orchids

    Hi all. I have been growing my orchids strictly organic for the last year now. So far it has its ups and downs. But for the most part it works much better for me than using chemical. I was wondering if anyone else grows strictly organic and if so, what liquid fertilizer do you use. And if not liquid any water soluble ones out there?

    I'm just looking to mix it up a bit.

  2. #2
    Dorsetman's Avatar
    Dorsetman is online now Senior Member
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    I think this is important - growing orchids organically . meaning using an organic feed.Fresason - see below - Unfortunately there are not many to choose from - at least here in UK. I discount using animal manures to make my own . The only ones I have found come from The Netherlands, and are made by the same firm that makes gro-bags ( which I use in an unheated greenhouse, for my tomatoes . They actually have a range of different ones. After looking at the analysis, and trying out a small bottle to check the pH, I have settled on the one they make for ericacous plants - rhodedendrons etc. Even then ( of course) I have to adjust the pH and Ec to suit orchids, rather than following their general gardening prescription.
    As to the importance , I showed in my research, published in various places several years ago, that epiphytic orchids get their food "pre-digested" as you might say, since it is actually plant sap ( exuded from the plants they are growing on) and diluted by the rain. So whilst a terrestrial; may get inorganic chemicals from the sloil, epiphytes get the diluted sap - which of course, is organic. Mahybe they can handle this much better than giving them disso;ved inorganic stuff - its a fair guess, anyway.

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    i was using 'worm poop' brand spray, until it ran out and now i cannot find anymore. one of the few things that did not burn my oncidiums. now i am experimenting trying to start a vermicompost bucket, to make my own worm tea. i could not find the 'red wiggler' worms locally though. bought some night crawlers at a bait shop, but they don't seem to be doing anything.

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    JMKentzel is offline Junior Member
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    I'm wondering if there is a way to use tortoise poop. I have 3 vegi loving tortoises who make the stuff by the ton.

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    i think that would need to be composted first... but not sure.

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    I grow outside in spring and summer. My orchids are covered in lizard poop, how organic is that! :-)

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    Looking at is scientifically, with a bent to reach the "perfect" balance (whatever that is), the problem with most organic fertilizers is that they are nutritionally incomplete. Often, one will be fine for "a, b, and d" and another will be good for supplying, "b, c, and traces of x, y, & z", but then you are left attempting to supplement the remaining minerals, and the balance the products used to give the Goldilocks "just right" amount of the minerals. I will grant that, as orchids are not particularly "hungry" plants, getting the diet perfect isn't essential, but making it get close can lead to overall healthier plants.

    Then there is also the fact that the ammonium ion, for example, absorbed by the plant is identical whether it originated in guano, mineral potash, or the petrochemical industry.

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    Hi guys,
    I've started using some vermicompost liquid or maybe I should say a 'worm poop' liquid, which is sold locally at any garden center in Ukraine. The label says the product has all necessary nutrition components for an orchid, like NPK 1.0-1.6-2.3%, Ca 0.6%, Mg 0.3%, Mn 50 mg/l, Zn 25 mg/l, Cu 50 mg/l and Co 5mg/l. I see that my catts grow like crazy, the Lc. C.G. Roebling "Blue Indigo" gave three sprouts, Lc. Canhamiana Azure Sky gave two and so on. They are all growing rapidly, but whether due to this organic soup or just becasuse they are healthy plants, I've no clue. This worm poop stuff is supposed to be used once or twice a month. My growing conditions are a south facing balcony, plenty of watering and good ventilation. I also use some light shading, since I managed to burn a couple of leaves in the beginning(

  9. #9
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    I tried an experiment and saved the used, dirty water from cleaning my aquarium, loaded with fish poop.
    I watered a few orchids with it about once per week. Unfortunately a couple of Paphs developed a brown fungal leaf spot disease. I concluded that it would be safer if the fish poop was fully decomposed before using it on my plants.

  10. #10
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    Quote Originally Posted by raybark View Post
    Looking at is scientifically, with a bent to reach the "perfect" balance (whatever that is), the problem with most organic fertilizers is that they are nutritionally incomplete. Often, one will be fine for "a, b, and d" and another will be good for supplying, "b, c, and traces of x, y, & z", but then you are left attempting to supplement the remaining minerals, and the balance the products used to give the Goldilocks "just right" amount of the minerals. I will grant that, as orchids are not particularly "hungry" plants, getting the diet perfect isn't essential, but making it get close can lead to overall healthier plants.

    Then there is also the fact that the ammonium ion, for example, absorbed by the plant is identical whether it originated in guano, mineral potash, or the petrochemical industry.
    I agree that organics may be deficient in some nutrients, and should therefore be used occasionally as a supplement or 'treat,' and not as the main fertilizer.

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