Fertilizer??! So what is the deal on how to use it?
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  #11  
Old 04-29-2016, 11:58 PM
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estación seca estación seca is offline
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  #12  
Old 04-30-2016, 09:13 AM
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From my reading so far, I think Ray's explaination answers the question, especially that the velamen traps any particulates immediately, within seconds. It is almost like tissue paper in that sense. The particulates are in the water as a result of ions. In rain clouds, the first few seconds of rain usually bring the bulk of suspended particles down into the "tree canopy" and that is when the bulk of the feeding occurs.

To water with "pure" water (meaning no fertilizer) is to saturate the velamen, and pretty much waste the rest of the water. The pure water flushing is to get rid of salt buildup. Rain water does not have this, only ground water, where most of our tap water comes from. Orchids lucky enough to be raised with only rain water, or the water coming off the trunks of trees, generally do not have this problem.

Having filtered water is helpful.
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Old 04-30-2016, 10:29 AM
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Quote:
Originally Posted by Fairorchids View Post
And I have 48 years of experience in medium to large size commercial orchid nurseries in Denmark, Germany, Holland & England (the largest had over 15 acres under glass).

They all water first, fertilize next.

So I beg to differ with those who experiment with other schedules.
There are many reasons why things that are common and successful practices on a commercial scale in a greenhouse environment might not be the best or only choice for a few plants on the windowsill grower. Done right, the water first then fertilize method wastes much less fertilizer, an important consideration in a large scale for profit operation. Certainly it can be successful on a small scale too, but that doesn't mean it is the most convenient, time effective, fool-proof choice for a private collection.

Last edited by PaphMadMan; 04-30-2016 at 10:36 AM..
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Old 04-30-2016, 12:24 PM
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When I was learning about orchids in the public greenhouses in Piedmont Park - now the Atlanta Botanical Garden - some 40+ years ago, it was common practice to water, then feed, but the concentration of fertilizer applied was many, many times the concentration we commonly use today, and orders of magnitude stronger than the plants would see in nature.

Just because "we've always done it this way" does not mean it is best. In fact, more often than not, it isn't.
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Old 04-30-2016, 01:08 PM
PaphLover PaphLover is offline
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Interesting discussion! Thanks for all the info, experts.

Ray, S/H clarification if possible. Since switching to S/H, I have been 'flushing' my plants with plain water each week with my kitchen tap's spray function which produces lots of bubbles of air as the water rushes through the media (we have excellent soft water here). The more 'touchy' plants that would prefer rain water receive tap water that has been sitting in a bucket for several days to allow the chlorine to dissipate (since I'm in a condo, rainwater is difficult to get). Once that's done, I drain and fill the reservoir with fertilized water solution. I did this to prevent salt buildup in the media, but perhaps I misinterpreted your S/H care instructions.

Is the weekly flushing 'overkill'? Am I preventing my plants from receiving the nutrients they need by using this method? Or does the airy S/H media allow the root velamen to dry enough to absorb the weekly nutrients?
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Old 05-01-2016, 12:47 AM
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Wow.
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Old 05-01-2016, 08:47 AM
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Re: S/H Clarification:

For an apartment environment, I think that's a pretty good technique. In the greenhouse, I just flush heavily with the dilute fertilizer solution, allowing the excess to dump on the floor.

In a S/H pot, the roots should never dry out. They will actually not grow as much velamen, as they don't need it to trap and hold nutrients, as they're always available.
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Old 05-01-2016, 09:28 AM
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Quote:
Originally Posted by Ray View Post
I don't view the use of K-Lite as a cultish thing; it's an experiment!

So far, so good.
Ray - For you it may not be cult, but believe me, some people have apparently been drinking the k-lite. (That's a metaphor, folks. Do not drink your k-lite.)
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Old 05-01-2016, 01:17 PM
PaphLover PaphLover is offline
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Quote:
Originally Posted by Ray View Post
Re: S/H Clarification:
In a S/H pot, the roots should never dry out. They will actually not grow as much velamen, as they don't need it to trap and hold nutrients, as they're always available.
Of course, yes, that makes sense. Thank you!

Quote:
Originally Posted by PaphMadMan View Post
Ray - For you it may not be cult, but believe me, some people have apparently been drinking the k-lite. (That's a metaphor, folks. Do not drink your k-lite.)
Haha! Agreed. Us orchidists, it seems, tend to want whatever magic potion we can get to provide us with the perfect plants. So many tend to think the magic comes from just one thing rather than simply providing the proper care. Or more honestly, as someone here wrote once, NOT getting in the way of the plants' natural ability to survive and thrive.
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Old 05-01-2016, 02:41 PM
bil bil is offline
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I don't mind it being called a cult, because I am getting very good results, but if anyone suggests going to an orchid festival in Jonestown Guyana, and Purple Kool aid is on the menu, count me out.
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