leaves curling under

h2ofarmer · #1 12-10-2006, 11:26 AM

leave are curling under 4th week of flowering, not sure why any suggestions? h2ofarmer

OmegaVermelho · #2 12-10-2006, 01:40 PM

humm cant open the pic dude, but anyway double check water pH, temps, RH...bla bla bla...and specially if u´re using digital equipement like meters, timers and so on u should check them... i had a prob not while ago cause my EC meter was not properly calibrated...

h2ofarmer · #3 12-10-2006, 02:50 PM

new pics of curled leaves

OmegaVermelho · #4 12-10-2006, 05:13 PM

ok, so can u put info about your grow???what are the plants in, whats the pH, lights u know, the whole mambo jambo...cause from here i would say that they came out of a forced veg cycle if thats the case the leafs will stay like that...i have 2 plants in a ebb n flow that were REVEGED due to timer failure (this lasted only in a 24h period), the result was exactly the same as ur plants, the leafs curled but the plants are still healthy...

potroast · #5 12-10-2006, 06:05 PM

Wow, those are nasty looking! I've never seen plants look that bad. Just because we don't know the reason, we can try to fix it. It's called reading your plants, and you've let this go too long without correction.
Flush. If you're in hydro, change the res. If you're in soil, flush generously.
Maybe even spray the foliage with plain water once a day. I don't think that damaged leaves will come back, but they might. What you have to decide is if you have enough room for new growth to develop before flowering. If not, then start over.

HTH

h2ofarmer · #6 12-10-2006, 06:52 PM

ok the plants are in an ebb & flow machine in my closet. i have a 400 watt hps light that stays about 1' over the plants. i have two plants they are bag seed dont know the strain one looks like an indica strain and the one with the curling leaves looks to be a sativa strain.i change my reservoir every week it is 10 gallons, i use fox farm nutes at half strength,disitlled water and keep a ph of 6.0. they are in there 4th week of flowering this problem just started saturday morning,up until now the plants looked great . thanks for the help potroast and omega h2ofarmer

Widow Maker · #7 12-10-2006, 07:35 PM

Your medium is prolly over nuted. Flush with pure phed water and watch how the ppm will rise back up the next day. Depending on your findings you might want to do it a couple times.
The light seems a little close. Are you using a cool tube?

OmegaVermelho · #8 12-11-2006, 07:45 AM

Ok i´ve done some research and what i´ve found was this:

When u force a Cannabis plant to reveg (specially for short periods of time) one of the major drawbacks is the possibility of getting leaf curling without particular signs of leaf descoloration (the other is the increase of hermie plants), this phenomenon happens because the plant produces 2 dif tipes of leaf tissue in a very short period of time causing the leafs to curl or even to wry...its also stated that Haze or Haze dominant plants have an easier recovery due to their higher growth rate while Indica or Indica dominant plants due to their more compact and stacky structure and tend to take longer to recover...also the plants imunnitary system is seriously damaged in plants that are reveg, this may lead to poor yield, poor taste and low pest and plague resistance.......it would be nice to ear what more experienced growers have to say on this issue cause like i said in a previous post i experienced the same prob when a timer didn´t switch off on my 3 week old flowering plants leaving them for 24h under a 400w HPS, the plants are TODAY 7 weeks into flower and they still show the curled leafs (as soon as the lights turn on im gonna take a few pics 4 u to see)...

I dunno if this sounds acceptable or if in fact u had a problem with your photoperiods but i thought i would translate the DVD info just in case...

This comment was taken from a DVD made in Spain with the participation of Ben Dronkers and Jorge Cervantes "Supergrow para Enteranos"

bigballin007 · #9 12-11-2006, 09:31 AM

That is over watering I have had my plants do the same thing when I watered to often. My leaves never did recover completly but once I watered less and let the pots sit dry for a couple of days my leaves dried around the damaged parts of the leaves and the rest of the undamaged area on the leaves were fine and I was able to get an 3/4 oz from my plant that was realy close to the way yours looks.

OmegaVermelho · #10 12-11-2006, 02:00 PM

Quote:

Originally Posted by bigballin007

That is over watering I have had my plants do the same thing when I watered to often. My leaves never did recover completly but once I watered less and let the pots sit dry for a couple of days my leaves dried around the damaged parts of the leaves and the rest of the undamaged area on the leaves were fine and I was able to get an 3/4 oz from my plant that was realy close to the way yours looks.

U did notice this is a hydroponics board didnt u???