Post by kathytharper on Oct 21, 2016 12:34:11 GMT 7
The most important step to remember when feeding your orchid is to correctly identify the type of fertilizer you should be using.Potassium (K) is mainly responsible for the control of flower, and fruit development. Phosphorous (P) for flower production, and Nitrogen (N) for healthy vegetative growth. The amount of feeding depends on the plant concerned, the time of year and general health of the plant.Please click here to get more about this topic.
Hmmm, a "simple" question.... If you search google scholar, you'll see fair numbers of studies about orchid mineral nutrition, but we have very limited amount of knowledge about epiphytes. Lots of things generalized from non-epiphytes may not apply. You can try to ask this question in www.slippertalk.com, and see what happens! Or you can check the archive (good and technical discussion there). Also, you might want to start from here: firstrays.com/free-information/feeding-and-watering/
Also there are quite a lot of myths, which are not scientifically supported. For example, high P (so-called bloom booster) doesn't do much for orchids in many cases (I vaguely remember there are a few studies which support the claim).
But unless you have optimized your growing condition, it is unlikely that the type of fertilizers is the limiting factor. So as long as you use weak fertilizer (I go with around 20-30ppmN now), it is probably good enough. Probably MSU is a good start, and if you feel like, you can add a bit of NH4 with ammonium nitrate. Different orchids prefer different NH4:NO3 ratio, but a bit of NH4 is generally good (MSU has 100% NO3). It has lower P and K, which is good. Many orchids seem to have high capacity to recycle these two elements (in addition to many other elements), so you can reduce the amount of these macronutrients to reduce overall EC (lower EC helps water uptake). Also, lower P is probably a good thing because it will encourage association with mycorrhizal fungi. It also has sufficient Ca and Mg, which are missing in some fertilizers. I haven't used it, but DynaGro Foliage Pro seems to be decent, too.
In a Brazillian study of Cattleya, they have showed that combining inorganic and organic fertilizer is better than using each alone. But using those solid fertilizers (e.g. rape-seed meal) could be tricky, so I haven't tried it yet.
thatoneplantboi: Hey guys, I'm new to growing nepenthes, I'm getting a mini indoor greenhouse to grow them in. What kind of light should I use for them? Also, if you could provide a link to a product, it would be very much appreciated
Oct 5, 2017 10:16:29 GMT 7
borneo: Yes, they work superbly. But you don't need expensive lights, cheap ones work well too.
Sept 2, 2018 14:34:57 GMT 7
mylesg: i havent checked in here for a while, why does it seem all the CP forums have lost their once strong activity? the trade/sale section used to be so active and now its a ghost town. where is everybody hanging out these days for a strong online CP community?
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lance: Everyone left the forums and moved to facebook groups.
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mylesg: just posted ton of new pics in my thread!
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