Should I cut the fan leaves a few weeks before I harvest?

Harrekin

Well-Known Member
A plant will only drop a leaf if it:
1. needs its stored nutrients because the roots are not taking in more than its using or
2. its not getting enough light, the plant knows its performing inefficiently (due to low CO2 intake) and the plant drops it.

These are pretty much the two criteria for a plant yellowing or dropping a leaf...anything else is grower error. ;)
 

brainwashed

Member
Ya but they always drop leaves it is still natural and normal! You could go ask any of the big pot farmers in The Green Triangle they will tell you it is perfectly normal.
 

wbd

Well-Known Member
A plant will only drop a leaf if it:
1. needs its stored nutrients because the roots are not taking in more than its using or
2. its not getting enough light, the plant knows its performing inefficiently (due to low CO2 intake) and the plant drops it.

These are pretty much the two criteria for a plant yellowing or dropping a leaf...anything else is grower error. ;)
So you should be able to locate plenty of pics of plants in week 8 flower with no yellowing at all, yes yes? And some nice green cots?

I would like to be first to see those pics. :)
 

sparky1

Well-Known Member
like i said harrekin... i a simple fool hobby grower... lost in a sea of wise men. do it your way if it works for you, its all good!!!
i do it my way... we can meet in the middle as friends, there is alot of grey area to play with.
my last point is this... the way i see it cannabis is an annual and its only job is to procreate in 1 season then die off completely... anything ive taken out of the woods looked pretty punky by the end of the season... but i think it died happy because it had lived a good, long, FULL life... and it was just its time to go.
do you want to live forever... if you do... you probably havent lived enough life to see and appreciate the cyclic nature of it all
DONT FIGHT CITY HALL... IF IT WORKS FOR YOU WHY CHANGE IT
 

420God

Well-Known Member
A plant will only drop a leaf if it:
1. needs its stored nutrients because the roots are not taking in more than its using or
2. its not getting enough light, the plant knows its performing inefficiently (due to low CO2 intake) and the plant drops it.

These are pretty much the two criteria for a plant yellowing or dropping a leaf...anything else is grower error. ;)
Dude, you're wrong.
 

420God

Well-Known Member
Plants leaves yellow and die off as they're not needed by the plant.

Selectively trimming some leaves at certain times can help the yield.

Knowing when and which leaves is something that needs to be learned through experience.
 

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sparky1

Well-Known Member
420... i wish i had your space... l love the tree... but even more so the veggie patch. its good to have a veggie garden.. good for the soul and the stewpot
 

Harrekin

Well-Known Member
Im pretty sure the lack of green leaves at the end of flower that 95% of growers have is because:

1. most people dont feed their plants properly (only using bloom foods without supplimenting additional N during flower)
2. most people flush cos they read they were supposed to (even tho its bullshit).

Im telling you a healthy plant will not drop leaves at any stage in its life unless there is a limiting factor causing it to.

The Fall/Autumn analogy doesnt work, leaves fall off perennials to conserve water during the winter (we dont have winter indoors), annuals just die off after reproducing...

Guess it is alot harder to change myths that people have wrongly engrained in their brains...

Theres alot of more experienced growers here that will agree with me, but believe what you want, Ill just continue keeping my plants green, healthy and happy throughout the full duration of their lives ;)
 

canefan

Well-Known Member
Herrikin is spot on!!!! If people would listen more to growers which actually grew plants, not just a small MJ plant grow in a closet. There are many on this site which have tried over and over again explaining biology and botany with little effect.
Here is a pic of one of my crosses which is about 7 days from harvest.
OM.jpg

OM I.jpgOM II.jpg Granted this may not be the biggest or best plant in the world but she was only 6 inches tall when I set her out to flower. There is no reason in the world if the plant is fed correctly to lose leaves during the grow or for the plant to turn yellow during flower. I think I might have lost 2 or 3 fan leaves during the grow so far which was due to a bug problem.
Feed your plant properly throughout the grow, study up on plant biology and botany and last but not least do not listen to commercials from MJ nute industry all they want is your money.
Sorry for the rant, but this topic goes on endlessly with little being resolved.
 

420God

Well-Known Member
Im pretty sure the lack of green leaves at the end of flower that 95% of growers have is because:

1. most people dont feed their plants properly (only using bloom foods without supplimenting additional N during flower)
2. most people flush cos they read they were supposed to (even tho its bullshit).

Im telling you a healthy plant will not drop leaves at any stage in its life unless there is a limiting factor causing it to.

The Fall/Autumn analogy doesnt work, leaves fall off perennials to conserve water during the winter (we dont have winter indoors), annuals just die off after reproducing...

Guess it is alot harder to change myths that people have wrongly engrained in their brains...

Theres alot of more experienced growers here that will agree with me, but believe what you want, Ill just continue keeping my plants green, healthy and happy throughout the full duration of their lives ;)
Again, you're wrong. Oh so very wrong.
 

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probo24

Well-Known Member
While I can see some yellowing, and have had some leaves drop, I continue to feed
these two plants. In six days the top buds will be harvested and the bottoms will
grow and be fed for two more weeks.
Only through trial and error of multiple harvests of this strain did I come to realize
nutrients are best kept in the soil where the roots can use them, not flushed out of it.
 

Harrekin

Well-Known Member
Again, you're wrong. Oh so very wrong.
Perhaps I'm picking up on it wrong,but what do those pictures have to do with cannabis/this discussion in general? And what does purposeful defoliation have to do with yellowing leaves in flower?
 

209whitebread

Active Member
Inaccurate statement, a healthy plant wont drop ANY fans and will probably still have green cotyledons (original seed leaves) till the end. If you're using the wrong nutes/they're not getting enough light your plant may drop leaves, but if it recieves everything it needs in the right amount it shouldnt drop any.

Bet you follow feeding schedules to the letter and dont suppliment your plants with any extra N in flowering either, do you?

Plants dropping/yellowing leaves being normal is a forum bullshit myth thats just read once by someone not knowing any better and then spewing it onto others who believe it and then perpetuate the cycle.

Hope this helps ;)
hay bro i like what you said, i have one question for you, what about the lower leafs if they are touchin the soil or siting on the pot would it hurt to either cut off or pull off?? thanks
 

Harrekin

Well-Known Member
The plant can determine itself if a leaf is performing efficiently and doesn't need anyone's help to do so.

It knows a leaf is performing inefficiently because with lowered photosynthesis (from lack of light,etc) the plant can detect a lowered level of CO2 intake in that leaf and it will drop it.

But if you reread my original post,I said a healthy plant receiving all it needs will not drop/yellow any leaves,however in the scenario above there's a number of limiting factors that the grower should be able to mitigate.

If not,then it's grower error...simple as!

If your leaves are discolouring/getting mildew or mold from sitting on wet soil they SHOULD be removed,as this could cause systemic damage to the plant,not just a slight loss in yield.
 

209whitebread

Active Member
thats why i wanted to just cut a couple leaves from the bottom ones that wer touching soil to prevent any kind of mold or anything else, i posted a few pics , check them out under indoor growing n feel free to drop any comments you have, thanks for the help
 
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