fan leaves "clawing"... WHY???

Why would a plants fan leaves start to do that "eagle claw" looking thing? And its not even every set of fan leaves. I'm gonna keep this short cause I'm really looking for feedback here... Lets assume everything else is spot-on-perfect, why would the "clawing" show up?

To much N

^^^^ that

agree, to much Nitrogen, but its in flowering, and its mostly top leaf`s

more info please and some pics might help us give better advice, nice of you to keep it short but it can be to short I guess

if your in flowering and pass the stretch (fist 2-3 weeks of flowering) you want to cut most of the nitrogen and up the P/K
if you experience clawing leaf`s here your at risk of getting a Hermi and get less yield in the end, I would suggest you to cut all N. and maybe even do a flush if that is the case ?

Lets pose this in hypotheticals... Hypothetically speaking, lets assume the plant is in the beginning of flower, maybe a week or so. Lets also assume that the plant is being fed with TechnaFlora according to the "Recipe for Success"... Unfortunately, according to the recipe for success, the "BOOST" which is used during both growth stages, contains the majority of the N... I don't think it would be possible to eliminate this from the recipe for success formula without doing some damage...
Lets also hypothetically say that the plant appears to be OG Kush dominant... could that have anything to do with it? I've heard that the OG Kush can sometimes show some odd leaf traits.
-Sorry about all the hypotheticals... I've had some trouble hit close to home and I'm not taking anymore chances... Thanks for putting up with it.

Clawing of leaves is caused generally by a few things.

Too much N

Overwatering with nutes containing too much N

Or it can also be caused by the pH being too low or too high causing other available nutrients to not be available which can cause an abundance of N as other elements cannot be absorbed and transported.



Hypothetically speaking of course.




J

Any more answers to this problem???

Stop giving N nutes..pics would help and pH.

Coho said:

Stop giving N nutes..pics would help and pH.

Click to expand...

As I said above... with the TechnaFlora, I think its almost impossible to take out N without doing damage to the overall formula.
As far as for pH... Lets hypothetically say the pH is spot on.

if its dark green and clawed the forumla isn't something the plant wants.. Cut by half and see if the plant likes it. Some are nute hogs some aren't.

Thank You Coho...
Hypothetically speaking... lets assume its a OG Kush cross. Do you know how they are with feeding strength?
Also hypothetically, lets say the plant is a nice healthy green. Darker green fan leaves, with all the new growth starting that lime-ish color and then turning an even dark green as they settle in.
So someone with this problem could try a 3/4 or even a 1/2 strength feeding?

Lets also assume that the stalk has just the slightest, I mean really really just a slight little bit, of purple streaks... and the stems to the fan leaves are almost all purple... Could this be strain specific? deficiency?

It could be a strain trait of purple stems or it could be too cold at night.

IMO plants should NOT have dark green leaves. They should also NOT look leathery.

Reduce your strength of the formula and see how it goes.



J

Someone in this situation should, hypothetically, cut their feed strength down to half?
Lets also assume that heat/cold is not an issue... lets assume its under a 250HPS and that night temps don't go below 72.
Anybody else wanna weigh in?

if youre in soil you can add sugar and water to tie up the extra n

I have one out of three doing this, so I'm kinda dumbfounded. I know I've had some pH issues and I suspected over Nitrification, but after 3 flushes, it still exists. I've tried many lines of thinking and can only come to two possibilites. Even though drainage didn't seem to be an issue, I just found that this pot did not have the extra drainage hole I put into the others. I kept adding dirt to the top off the pot, which was some cheap heavy soil that also had a lot of peat. Even though I don't believe she is root bound, the top of soil seems to retain moisture and is spongy after watering. I know she isn't drinking as much as she used to, and may be finishing early for me. This plant had this issue for a long time now, and after reduced feeding, flushes and extra drying time, she is still doing this. She hasn't had any miraclous recovery but seemed to improved slightly. Shes' still going to produce some major buddage for a very stressed girl. I can rule out too much N and I feel there is either an issue in the root zone (which I will inspect after harvest), or like another poster suggested, genetics. After wracking my brain continuously on this matter, I'm almost glad to accept the fact that maybe, just maybe, it wasn't me. Water intake issue or genetics is where I'm hanging my hat for now. In the following pic some leaves have been trimmed or removed. Sugar leaves are spotting and turning up and dying off. The claw became more pronounced after this flush on a few leaves. My other plants leaves are flat or pointing up, not down like these.