Lower fan leaves falling off

JMD

JMD

Well-Known Member
I have two plants in a 60x60cm cabinet with 90W of LED (4:1, red:blue), but some of the larger lower fan leaves are starting to simply fall off.
They are 9 weeks today, with 2 weeks and 4 days in flower.

2013-07-11 14.59.57.jpg 2013-07-11 15.00.08.jpg

Leaves seems to be completely healthy and so does the rest of the plant, so my first guess would be too little light.


What do you guys think?
 
Doer

Doer

Well-Known Member
Well, I don't know. I've never tried LED. OTH, you have a nice cola forming, so what's to worry?

I can see the fan leaves get used up, dried out and then I pull them, toward the end of bloom. But, I have never seen a healthy leave just fall off.

You can run a test and see if you can rule our Light Level as the problem.
 
JMD

JMD

Well-Known Member
Doer said:
Well, I don't know. I've never tried LED. OTH, you have a nice cola forming, so what's to worry?

I can see the fan leaves get used up, dried out and then I pull them, toward the end of bloom. But, I have never seen a healthy leave just fall off.

You can run a test and see if you can rule our Light Level as the problem.
Click to expand...
Thanks mate. How do I run a test of the light level?


karousing said:
has there ever been ph problems? especially low ph problems?
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I haven't tested the ph, ever. I grow them in plain soil and I water them with water with standard flower fertilizer - to see if it can be done "low tech".
 
JMD

JMD

Well-Known Member
I think it might have been a problem with too much water. I watered them a fair amount some days ago, because I had to go away for a few days.
 
JMD

JMD

Well-Known Member
Hmm I'm still loosing some of the large lower fan leaves.. Not sure what the cause is.

Any help is greatly appreciated.
 
spitsbuds

spitsbuds

Well-Known Member
as above said, run a quick test. just on the of chance, pic 1, youve got like a silver edge to youre leaf, can you check to see if there is one or its some light/reflection in the image ect
 
Slipon

Slipon

Well-Known Member
agree, and as long as its the lower leaves that fall off you shouldn't worry to much, normal for a flowering plant to loose the lower leaves as it don't use em anymore, tho normally it will sug the goodis out of em (make em yellow) before it loose em unless they don't receive much/any light, but as long as it is`t the top/new growth you should be ok
 
mycomaster

mycomaster

Well-Known Member
A plant will self prune at times if the leaf isn't getting enough light to support the rest of the plant or itself, sometimes the plant will jettison them. Completely normal. You should think about some supplemental light a little lower for your plants bro. You'd probably see results really fast from adding a couple. Peace out.
 
JMD

JMD

Well-Known Member
Slipon said:
do they get any light ?
Click to expand...
The real wattage of my homemade setup is 72W on the LEDs - so I'm fairly certain now that, that's the cause.



spitsbuds said:
as above said, run a quick test. just on the of chance, pic 1, youve got like a silver edge to youre leaf, can you check to see if there is one or its some light/reflection in the image ect
Click to expand...
How do I run a quick test? I'm not sure what's involved in doing such test. The leaf is a lovely green, the silver edge is caused by my phone.



mycomaster said:
A plant will self prune at times if the leaf isn't getting enough light to support the rest of the plant or itself, sometimes the plant will jettison them. Completely normal. You should think about some supplemental light a little lower for your plants bro. You'd probably see results really fast from adding a couple. Peace out.
Click to expand...
Thanks for the advice! I will definitely do that. My next grow will include a 220W homemade LED lamp (Red/blue in the ratio 4:1) - I will add some warm white bulbs to that, to get a broader spectrum.
 
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