The Orchid Forum, for the UK and Europe (previously known as The UK Orchid Forum) • View topic - Fertilizing orchids
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 Post subject: Fertilizing orchids
PostPosted: Sun Jan 18, 2009 1:11 pm 
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A good article on the fertilizing of your orchids:

http://www.bbg.org/gar2/topics/plants/h ... izing.html

Cheers.

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 Post subject: Re: Fertilizing orchids
PostPosted: Wed Aug 17, 2011 4:57 am 
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Just a fun observation: I live in Chiang Mai in northern Thailand where I simply grow native orchids in the garden, no greenhouse or fertilizer necessary. Still, it puzzles me how a Vanda liouvillei can produce 200 flowers just by clinging to the bark of a mango tree. Where does the nitrogen come from? I believe that bird and gecko lizard droppings may play an important role. The gecko droppings are found everywhere indoors if you do not clean, and so the forest must be littered. When such droppings are dissolved in morning dew or rains, well, then you have a film of nutrient solution covering the bark, and the orchid's aerial roots have a feast.

Cheers, Eric & Ketsanee


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 Post subject: Re: Fertilizing orchids
PostPosted: Sat Oct 26, 2013 10:29 pm 
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Think this link is outdated as I cannot see such topic, got bored of looking so gave up. Can only assume it has been replaced somehow as it was OP 2009!

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 Post subject: Re: Fertilizing orchids
PostPosted: Thu Oct 31, 2013 9:55 pm 
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Starting to put down roots here
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Good basic information here. http://www.firstrays.com/nutrition.htm

By the way, do those people who use Rain Mix carry on feeding during the winter, and if so, how?
Richard


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 Post subject: Re: Fertilizing orchids
PostPosted: Fri Nov 01, 2013 9:52 am 
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Richard I have stopped using rain mix for the winter, but this is the first year of trying it so for me it is still in the experimental stage. I have moved over to tomato fertilizer for the next few months.

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 Post subject: Re: Fertilizing orchids
PostPosted: Fri Nov 01, 2013 8:05 pm 
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Thanks, Terry. This is my first full year too, so we'll see how we go.
Richard


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 Post subject: Re: Fertilizing orchids
PostPosted: Fri Nov 01, 2013 8:46 pm 
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How did you all get on with Rain mix this year?
I used it again this year and most of my bulbs are massive! Not sure if it's the rainmix or my first year with a greenhouse and a superb summer!
I used it at every watering at 550us and am now on 400us but from next week I'll cut down to 250us all winter.

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 Post subject: Re: Fertilizing orchids
PostPosted: Sat Nov 02, 2013 5:27 pm 
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My hardiness zone is: 8b -6.7to-9.4
I carry on as normal but watering frequency is greatly reduced so the plants are being fed a lot less without reducing strength. If you do reduce strength then feed levels are reduced even further. Personally would recommend feeding to recommendations for a full year otherwise you are basing your actions on no experience so learning nothing.

What we have to remember also is we are not talking big feed strengths, I see a lot of comments like high feed strength, high nitrogen etc
Rain mix is approx 550 us/cm, that's about 350 ppm, I bet there is tap water that is the same!

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Last edited by Masdyman on Sat Nov 02, 2013 5:47 pm, edited 1 time in total.

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 Post subject: Re: Fertilizing orchids
PostPosted: Sat Nov 02, 2013 5:36 pm 
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steviejasp wrote:
How did you all get on with Rain mix this year?
I used it again this year and most of my bulbs are massive! Not sure if it's the rainmix or my first year with a greenhouse and a superb summer!
I used it at every watering at 550us and am now on 400us but from next week I'll cut down to 250us all winter.


Steve, You have obviously hit it right with feed, light, heat etc, the rain mix is a great feed for sure, the regime is simple and consistent. Most report better and more growths without reducing flowering, using rain mix basically cuts out alot of other variables so a lot of hard work has been done for you.

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 Post subject: Re: Fertilizing orchids
PostPosted: Sat Nov 02, 2013 8:24 pm 
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I am using it this year and so far so good.
Unfortunately use of Rain Mix has also coincided with a lot of new orchids so I have nothing to compare to.
I managed to smash the measuring spoon that came with it so am using the small side of a kiddies medicine spoon per 3 litres.
Obviously I'm taking a very scientific approach ;-)

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 Post subject: Re: Fertilizing orchids
PostPosted: Sun Nov 03, 2013 6:02 pm 
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Sordibub wrote:
I am using it this year and so far so good.
Unfortunately use of Rain Mix has also coincided with a lot of new orchids so I have nothing to compare to.
I managed to smash the measuring spoon that came with it so am using the small side of a kiddies medicine spoon per 3 litres.
Obviously I'm taking a very scientific approach ;-)


Hi Rachel, All the guess work has been done for you so nothing scientific! The spoon is nothing special so if you can find something of a similar size like you have you will be fine. Coffee shop or cafe spoons is all they are!

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