Super silver Haze tops are curling, bottoms are yellowing???

[Hazy Lady]

I don't know man, I do not think JD is totally correct. Those plants are not nearly finished. That is the reason why i do not grow ssh! BECAUSE IT TAKES SO LONG TO FINISH. This is not ready for a flush yet. She is just beginning to boom for ya. Keep feeding her, you are in promix, maybe if you were in actual soil vs promix,maybe almost ready for flush...but not the case, you are in promix...so by now the plants used anything fert related that promix has to offer and it is getting what you give it. This is just on your lowers? This guy jd is sort of right, I just do not think he knows that a good haze takes a long time to finish. If you keep feeding that and then start a flush at 68-73???DAYS??? Not sure, never grew haze, but I do know that from what I hear a good one finishes in 76-83 days/or even more from some other hazes. Do a search on IC for ssh/or any haze finish times man.

I would like to add something, I grow Haze and Haze hybrids and there are some very fast finishing pheno's of SSH and other 50%+ Hazes.
It is very hard to say from the photo how long but the amount of white hairs indicate it does have a while yet.
I believe the curling on that plant is due to it being Nitrogen sensitive, I have one the same, same curl, she just can't take the same nutrients as her sisters, obviously it will remain now but the lower yellow leaves could be from a deficit of all nutrients, most likely as you only gave plain water for a spell? but it could also be from a PH inbalance - could! but I would think lack of nutrient is the culprit.
I would apply bloom nutrients, low or no Nitrogen, high P & K
to ensure your buds don't suffer and just ignore the curly leaves.

 

[jammie]

hey all- well its been about 6 days or so. i'd be curious to hear back from joe on his results. i bumped up my cal/mag from 3ml/g to 6ml/gal in my dwc buckets and did a twice daily spray with cal/mg. my buckets are running ph 6-6.3 with an ec 1.9 so there shouldn't be any lockout issues and i'm not really seeing any improvement. my base flower nute for the last several years has been flora nova (low n,supplemental calmg). my lights on room temp is 21-24c. with good air circulation and the plants right under my lights are not affected. any other ideas????

 

[!!!]

I had this problem with my SLH for awhile. Leaves curl down and "close." The leaves look hideous and don't match any of the Cannabis Nutrient Disorder diagnosis material I've seen, but I'm thinking of adding it now that I see more people experience it.

Unfortunately, I'm not exactly sure what causes it. I thought it was very low humidity (20%) but that turned out to be wrong. I had this problem in some veg plants when I continued to feed them the same concentration of nutes but changed the lights from metal halide to a few CFLs, which would indicate a high concentration of one or more nutes.

Here's the thread: http://icmag.com/ic/showthread.php?t=150380 - The pics didn't look so bad, but 2-3 weeks after they were taken, they looked as bad as yours, if not worse. I'm not sure exactly how I fixed the issue. I flushed thoroughly and then gave low concentration of nutes at the correct pH.

My leaves felt dry and brittle, as if the wax coating was off. This is why I assumed a humidity issue, but then I began thinking that the high concentration of nutes built up in the leaves were causing the leaf to dry up, as if you poured salt on the leaves. Here's something I wondered. Is there a specific nute that when in high concentration, causes the classic nute burn symptom of leaves burning at the tips? It might be that excess N doesn't show this symptom but instead manifests itself in the problem you're having.

BTW when assessing whether a fix worked or not, keep in mind that the old ugly growth remains as is, and only new growth comes out looking good, so watch for shoots to see if they're exhibiting this issue before determining whether something worked or not.

I have a SLH plant I'm killing, but before I do, maybe I will try giving it excess N to see if that's the problem.


Hazy Lady: I don't know if white hairs are indicative of anything. On my SLH I had white hairs up till chop day, with amber trichs.

 

[joe fresh]

well i did give it a good dose of cal mag, old leaves the same, but the tops have lightened up to a more pal green and new leaf growth is normal, lower plant is less pale, i figure in 2-3 weeks i might really see the diff

 

[joe fresh]

so if i add cal mag and overdrive(1-5-4.....i think) and dont add any base nutes this should be a good mix?

 

[jammie]

i think i found the problem at least in my case- heat stress and poor aircirculation. even though my room thermometer showed 75- i got an infrared thermometer at home depot that shows surface temp and they were 93 on the leaves that there clawing. i adjusted my intake fan and added an exhaust fan and the leaf temp dropped in an hour. big thanks to yortbogey on another thread to make me reevaluate my room. i'll lets ya know if this solves the problem. ps that ir thermometer is the neatest toy!

 

[joe fresh]

how much?

 

[jammie]

i got a ryobi at home depot for $70. it even has a laser pointer. i'm sure you could find one cheaper. i like home depot and sears for their 90 day return policy (most time i'm cheap- why buy when ya can borrow) you can use it to check grill temp (max temp is 650), check wall and ceiling and around windows for energy leaks or areas to put more insulation. i may just keep this toy.

 

[joe fresh]

great little tool to have

 

[hazy]

Is there a specific nute that when in high concentration, causes the classic nute burn symptom of leaves burning at the tips?

yes, Calcium and Potassium deficiencies both cause tip burn.

 

[Justin_Credible]

i got a ryobi at home depot for $70. it even has a laser pointer. i'm sure you could find one cheaper. i like home depot and sears for their 90 day return policy (most time i'm cheap- why buy when ya can borrow) you can use it to check grill temp (max temp is 650), check wall and ceiling and around windows for energy leaks or areas to put more insulation. i may just keep this toy.

Why buy when you can borrow? LMAO!
Love ya jammie...I am going to start doing that. Do you think they will let me borrow a weed trimmer for 89 days and return it? Priceless...