If the above is true, then it would be beneficial to wash out the coffee after a period of time and let the plant restore its normal hormonal growth processes. I wouldn't use coffee in the winter time when growth hormones are not naturally being synthesized (in high amounts like in spring and summer) because of the hindrance of growth we normally see in plants in the winter. but this does not apply to greenhouse plants or plants in climates that aren't really affected by seasons and grow year-round.
I am also not saying that this is the only thing happening here. the lowering of the pH in the substrate is also an interesting concept, and there are likely many other chemical aspects of plants that are being affected by coffee compounds. The auxins were just one major aspect i looked at at length.
Last edited by Newman; 11-14-2013 at 04:26 PM.
Thanks for sharing this information.
I was aware of the presence of quick release nitrogen and other nutrients in coffee.
However, this is the first I've heard of the presence of growth regulators in coffee.
Coffee just became more intriguing for me, thanks to you.
That's very interesting. Thanks for sharing.
no problems, I found this very interesting too!
Thank You for sharing!
Thank you very much! This is incredible info and further makes me want to take a plant physiology class, as I have been considering doing!
IMO, nepenthes probably have a lot of the IAA oxidase enzyme, which is why we see this incredible result (even on the most difficult of species) with coffee. Plenty of times, nepenthes don't grow like regular plants, but like genetically disadvantaged runts. When we add coffee, however, we see the growth that should be expected from healthy plants.
I feel we would see maximum results when using coffee as a "release agent" when mixed in with other fertilizers and things like superthrive hormones. Doing so would require an appropriate photoperiod of course.
P.S I have used root auxins on nepenthes before with mediocre results. Maybe I should have added coffee!
Also, maybe part of the reason why some species are more difficult and slow is because they have more of this IAA oxidase enzyme! This is all speculation, of course.
Once again, thanks!
I find this very interesting matter too. Correct me if I'm wrong, but the plants contain that IAA oxidase which slows down growth? What is the evolutionary advantage of growing slow? I always was under the impression that a plant does everything to grow as fast as possible, but of course I don't know much on plant physiology and such...
There could be many factors at play here. Of course, first reason that comes to mind is what Newman put in his post here:
Originally Posted by bellsprout
The key phrase here is seasonal growth. Plants must slow down growth in winter when the days are shorter in order to not use more (building tissues) than what they take in (photosynthesis) and exhaust themselves. Although, degradation of IAA and similar auxins for the purpose of reduced photoperiod doesn't make much sense in nepenthes habitat since they are nearly equatorial. Meaning, they experience basically the same amount of light all year. They don't really need this mechanism in their habitat, but they still show use for it when people like me grow them in more northern regions, they definitely show the correct response and slow down in the winter.
Originally Posted by Newman
Of course, they still need this enzyme to regulate and slow down the flow of auxins for other reasons other than shorter days. It would be like if you had no restriction on the hormones in your body. What do you think would happen? Not good!
Short answer: This mechanism is important in regulating all plants hormones. If you have a solid 12 hour photoperiod for your plants, feel free to unlock this restriction with coffee periodically.
I can see your line of thinking evolutionarily, but this INDEED would be a evolutionary advantage!
i too have used the coffee treatment on my nepenthes for years.
and it does seem to make some difference , but from time to time i also notice the same plants IE burkei will have bursts of growth with out the treatments , so over time i use it less and less.
but if you have great results id keep it up.
i typically have leftover coffee in the pot and when it strikes me i pour it to all my neps.
Ok Tysneps thanks for explaining. Now I know I should give my neps too much coffee because I would exhaust them too much. My conditions aren't yet the best and they don't receive too much light. I'll start with coffee in spring then