Leaves curling up on the sides

We've got a problem with our plants where the leaves start curling upwards on the sides. The leaves are still green. We're growing plants indoors under a fluorescent until they're ready to bud and we put them outside (yes, this works here.) My husband thinks it's some kind of disease, since it started when he brought in a plant from a friend. It developed the problem and then all the plants started to get it. We had some other plants almost succumb to this, then when we put them outside to flower they seemed to get over it and bud out OK. But after cleaning and bleaching the grow room, some nice new clones are starting to do the same thing! Aak! My husband insists on growing in nothing but potting soil mixed with chicken manure for the veg, and then using Alaska Bloom during the bud cycle. I'll post a couple pics. Thanks for your help.

Two possibilities to consider:
1) Humidity . Leaves sometimes respond by canoeing if the humidity is too low.
2) Nitrogen overdose. Chicken poo is hotter'n a teen-ager's night thoughts. cn

WOW, that looks pretty severe. What is your watering schedule? For the most part when plants do this they are struggling to retain water. However, this looks like they have gone beyond that and may have some other issue. Good Luck!

havent seen much like this

as you said after you put them outside and they recovered so i am going to say its enviormental, like CN said whats humidity?

did you forget about them for like 2 weeks lol that looks awfully interesting and great camera picture btw

We're in Hawaii, and it is SUPER humid here ALL the time. I don't know what the humidity is in the room but we don't have any kind of dehumidifier in there and I would assume it's almost as humid as the outside. (It's an outside room, and we often open the door to let fresh air in.) We don't water them every day but the soil is always wet.

eloiserat said:

We're in Hawaii, and it is SUPER humid here ALL the time. I don't know what the humidity is in the room but we don't have any kind of dehumidifier in there and I would assume it's almost as humid as the outside. (It's an outside room, and we often open the door to let fresh air in.) We don't water them every day but the soil is always wet.

Click to expand...

im sorry, i have seen nothing like it and have no advice to give, i have subbed to this thread and hope we can find a resolution to your problem

wish i was more help

Matt

eloiserat said:

We're in Hawaii, and it is SUPER humid here ALL the time. I don't know what the humidity is in the room but we don't have any kind of dehumidifier in there and I would assume it's almost as humid as the outside. (It's an outside room, and we often open the door to let fresh air in.) We don't water them every day but the soil is always wet.

Click to expand...

Look at how the edges of the curled leaves are kind of plump compared to the healthy leaves. Is that some kind of white residue on them as well. I'm wondering if they could be infected. Do you have a microscope?

what temps are you running??? Canoeing from what I know is usually, not always.... some form of heat stress.... someone please correct me if I'm wrong~ perhaps something as pronounced as this might be a strain that does not take to the heat well and is being amplified by the high Hawaii temps?? although I have no idea what the temp in Hawaii is right now.... just my 2cents... hope someone can help!

You say the soil is always wet,if the humidity is high the plants wont need watered as much.Try to let the soil dry out a bit????

As for white residue on our leaves, we do have a bit of white powdery mold, which is nothing new, we've been battling that for a while. But we've had white powdery mold on our plants lots of times and it never caused leaf curl. On temps, Hawaii is really not very hot unless you live close to the ocean, and we live uphill, around 1000 feet above sea level, and it's not that warm here. The room might get to 85 on a really warm day. It hasn't been that warm lately. I really appreciate all the effort, y'all. Sorry if I'm shooting down suggestions one by one. We're not new to growing cannabis, but this has us so stumped.

looks like my problem as well, did you find a solution by any chance?

I'd get a good HEPA filter with powerful fan to start venting Outside and if possible also a sulfur burner or filter/dehumidifier. I'ma go with humidity too leading to mold related sickness, btw Is really really bad to smoke weed with Aspergillus, so beware.

Is anyone still paying attention to this thread? Because I have some updates and ideas. Well, we still have the mystery plant disease. After reading all y'all's comments (thank you!) and reading around on the Internet and just plain observing, I'm coming up with a few theories on my own. Maybe y'all can tell me if I'm on the right track.

First, I should point out that my husband grows these plants, and all the following ideas are HIS ideas. (He thinks I'm an idiot and rarely listens to my advice on anything.) I'm trying to convince him to modify a few of these things because I suspect it may be the cause or causes of our problems.
[HR][/HR]
When he repots plants, he COMPACTS the soil. I mean, he uses a nice regular potting soil mix with peat moss and vermiculite and all that but he SMASHES down the soil in the pot AS HARD AS HE CAN before he puts the plant in. I tell him this can't possibly be good for the plant. He's under the impression that air in the soil is a bad thing somehow. I have a feeling that this supercompacted potting soil may be leading to root rot and other such fungus growth.


[HR][/HR] Also, the plants are being grown in a cargo container with almost NO ventilation at all. Not a window or a fan or nothing. There's a door that we open on nice days, but that's it. I try to take the plants outside sometimes so they can get some air and real sunshine, but I can't do that all the time.

[HR][/HR] He won't use anything but chicken manure for fertilizer and although that used to work fine in the past, I have a feeling that he's either putting in too much or that just that it's helping to contribute to the compacted soil situation I mentioned above. Now, a friend of his gave him some diluted neem spray to spray on the plants, but as I understand it, that's for pests and I think what we have here is some kind of mold/fungus/rot problem. He's trying it on one plant, anyway.

[HR][/HR]This is really pissing me off, watching him kill all our plants while he acts like I don't know what I'm talking about. The next time "we" repot plants I'm insisting on doing a couple myself so I can repot them without compacting the soil. But I'm worried that this plant fungus or whatever will spread to "my" plants anyway.

[HR][/HR]So, first of all, am I likely to be right in assuming that these could be the cause of this? And if I'm right, what other steps can I take when repotting my plants to help them get over this? Thanks so much, guys.

[HR][/HR]

As you can see, now we have leaves curling up on the sides AND the "claw" where some bigger leaves are curling down.

I believe the cause of your problem is all the things you named above combined.
Compacting the soil like that is no good for the roots, they need oxygen too, get rid of the chicken shit its way too hot to use unless composted for a while.
I reckon your biggest problem is the grow room enviroment, get yourself a fan leave it on 24/7, also get some sort of extraction fan to suck out the humid stale dank air, plants need to breathe too, how would you like to be locked up in a cargo container all day with no ventilation if u can pick up a cheap hygrometer to measure humidity.
Leave the soil dry out a bit before watering again try go wet/dry cycle but dont leave it dry out completly.
Hope this helps your problem, keep us updated.

Man get yourself an stable forgiving medium!!! use more perlite.. ALWAYS USE DOLOMITE as you have PH issues going on!

I just wanted to add my 2 cents here. I was thinking that there might not be anything in your soil mix to break down the chicken shit to usable nutrients. Maybe add some mycorrhiza?

you can use fans to lower the humidity and if the soil is always wet on top there must be water below. It looks like too much water , just water once every 6 days.
PS. Also i saw in the pic you have another problem , those withe stains on leaft is Powdery Mildow comes also with the combination of hight humidity and low temperature .
So two things : stop giving water and for the second , read about powdery mildow.

eloiserat said:

We're in Hawaii, and it is SUPER humid here ALL the time. I don't know what the humidity is in the room but we don't have any kind of dehumidifier in there and I would assume it's almost as humid as the outside. (It's an outside room, and we often open the door to let fresh air in.) We don't water them every day but the soil is always wet.

Click to expand...