Opinions on green and cyan with whites

canadian1969

canadian1969

Well-Known Member
I have tried chives and green onions under blurple and can confirm it doesn't work well at all. Basil did exceptionally well, as I suspect most leafy veg would. The green onions were pathetic. Chives less so, but they didnt do anywhere near as good as they do in the outdoor garden.

Have you tried onions under just white light?
 
psychedelicdaddi

psychedelicdaddi

Well-Known Member
canadian1969 said:
I have tried chives and green onions under blurple and can confirm it doesn't work well at all. Basil did exceptionally well, as I suspect most leafy veg would. The green onions were pathetic. Chives less so, but they didnt do anywhere near as good as they do in the outdoor garden.

Have you tried onions under just white light?
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Lol I have not
Im actually questioning the lack of green/cyan emitted by white led.

NASA is saying they rec green to improve lower canopy development. Circa 2016 I think.
 
ganjamystic

ganjamystic

Well-Known Member
canadian1969 said:
I have tried chives and green onions under blurple and can confirm it doesn't work well at all. Basil did exceptionally well, as I suspect most leafy veg would. The green onions were pathetic. Chives less so, but they didnt do anywhere near as good as they do in the outdoor garden.

Have you tried onions under just white light?
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lol this is too funny.. I think you may have misread the title of the thread :eyesmoke:
 
canadian1969

canadian1969

Well-Known Member
ganjamystic said:
lol this is too funny.. I think you may have misread the title of the thread :eyesmoke:
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Nope dont think so, just wondering if he had tried with white first and didnt get good results and is now thinking of adding monos. All I am saying is just try it with white first.


OPINIONS, ha!! sorry guys I did misread that. Thought he was trying onions. my bad. lol
I was having this convo with someone a couple days ago re: onions, brain fart
 
C

CobGrower

Member
Tried it about 10 years ago when I was trying to make a light with the best spectrum for plants as I possibly could... result.. bleh, better off just going all whites I found out. Adding more 660nm reds or just a few 420nm blues (a little goes a long way because it is HEV light) gave me much better results than adding cyans and greens from my experience.

 
Rahz

Rahz

Well-Known Member
Plants can do well under a variety of lighting conditions, blurple for instance has no green at all. Some evidence suggests full spectrum is the better choice, but since 480-530 has the lowest photosynthetic response it doesn't make sense to bump it up more than what while LED already supplies.

I have also read that green will penetrate more but don't suspect overall yield will be improved over adding more radiance in the blue/red areas. 660nm would be a good supplement with white LED. Lower K high CRI white is also a good way to increase deep red levels.
 
psychedelicdaddi

psychedelicdaddi

Well-Known Member
CobGrower said:
Tried it about 10 years ago when I was trying to make a light with the best spectrum for plants as I possibly could... result.. bleh, better off just going all whites I found out. Adding more 660nm reds or just a few 420nm blues (a little goes a long way because it is HEV light) gave me much better results than adding cyans and greens from my experience.

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So, I actually am adding various spectrums as options. I currently have far and photo red options, uva 365-405nm options, and mostly Samsung 3000k/4000k .

I am adding 420nm , 500nm, 520nm and full spectrums to stretch the ir out to 840nm
Each spectrum, not wavelength, gets a switch and timer
 
psychedelicdaddi

psychedelicdaddi

Well-Known Member
Rahz said:
Plants can do well under a variety of lighting conditions, blurple for instance has no green at all. Some evidence suggests full spectrum is the better choice, but since 480-530 has the lowest photosynthetic response it doesn't make sense to bump it up more than what while LED already supplies.

I have also read that green will penetrate more but don't suspect overall yield will be improved over adding more radiance in the blue/red areas. 660nm would be a good supplement with white LED. Lower K high CRI white is also a good way to increase deep red levels.
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Im hoping that penetration helps lower growth develope faster so I get a more even harvest quality. It will hopefully be obvious if it works. Having it on a switch will be nice though. It could just be a night light in the end
 
C

CobGrower

Member
Have fun playing around, nothing is learned by not trying, that was my mentality anyway. I think your other spectrums are beneficial, under 420 and above 660, but once you get into 730+ the light just becomes a switch to tell the plants to sleep and only needs to be on a few minutes at the end of the daily light cycle, which I bet you already know if your diving this deep into tweaking a light.

Why not just lollipop the plant, get bigger buds on top, and not worry about trying to make larf into something better?
 
psychedelicdaddi

psychedelicdaddi

Well-Known Member
CobGrower said:
Have fun playing around, nothing is learned by not trying, that was my mentality anyway. I think your other spectrums are beneficial, under 420 and above 660, but once you get into 730+ the light just becomes a switch to tell the plants to sleep and only needs to be on a few minutes at the end of the daily light cycle, which I bet you already know if your diving this deep into tweaking a light.

Why not just lollipop the plant, get bigger buds on top, and not worry about trying to make larf into something better?
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Good point but if does make for a more even harvest it'd be worth knowing! And since I don't trim for shit .... Mind as well. 30$ & 30w in parts
 
psychedelicdaddi

psychedelicdaddi

Well-Known Member
A ton of the sunshine is green according to wikipedias spectrum plot. It could act as a carrier frequency for other wavelengths. Doesn't hps have a bunch of green?Solar_Spectrum.png
 
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coreywebster

coreywebster

Well-Known Member
Rahz said:
I have also read that green will penetrate more but don't suspect overall yield will be improved over adding more radiance in the blue/red areas. 660nm would be a good supplement with white LED. Lower K high CRI white is also a good way to increase deep red levels.
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I read the same about green and also that it has a big impact on shade avoidance, so too high in the green I would imagine would kick that shade avoidance switch and result in more stretch. If you think about old HPS vs MH, is it really the blue that keeps the internodes tighter or is it actually the lack of green in comparison to yellow HPS?

Now I run QBs and 90cri citi 058s and I don't see much stretch at all, especially on the 90cri 3500k side. I have my first sativa going on now and even that hasn't stretched. I was expecting a jungle.
 
psychedelicdaddi

psychedelicdaddi

Well-Known Member
coreywebster said:
I read the same about green and also that it has a big impact on shade avoidance, so too high in the green I would imagine would kick that shade avoidance switch and result in more stretch. If you think about old HPS vs MH, is it really the blue that keeps the internodes tighter or is it actually the lack of green in comparison to yellow HPS?

Now I run QBs and 90cri citi 058s and I don't see much stretch at all, especially on the 90cri 3500k side. I have my first sativa going on now and even that hasn't stretched. I was expecting a jungle.
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Very nice light mix, ill look out for this stretch effect. I do think it will be ok since the sunshine spectrum is so heavily green. Ill look into the green hps issue, I haven't heard of it. Only been growing indoors for two-three years now
 
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