Leaves curling down??

rossbonlay

Well-Known Member
Ive lookedaround and cant find the answer to this,could this be to do with temperature falling to 12-13`C at night,22-25`C during the day??
 

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Some strains do this easily. When it happens to me its ussually when I run higher nitrogen, but i cant say for sure. Once they curl, they normaly wont straighten back out.
 
rossbonlay said:
Ive lookedaround and cant find the answer to this,could this be to do with temperature falling to 12-13`C at night,22-25`C during the day??


I've had a bit of a cold snap here and my plants have just started doing that exact same thing - I'm thinking it might be the cold as well - I think the leaves cup like that to present a smaller wind-cross-section/less surface area during cold-spells - ya know - to retain heat. Not sure if that's true just thinking about it.

Cold seriously retards growth.

But I'm not sure why they wouldn't straighten back out.

I actually added a couple of incandesent lights to my growbox to try to warm it up a bit - not sure what else to do short of a timed space heater.
 
Here is a pic of my leaves - they look just like yours - and I've been hitting 20C nights just the last few days.

What does the interior of your plant look like?
 

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Here is a pic of my leaves - they look just like yours - and I've been hitting 20C nights just the last few days.

What does the interior of your plant look like?

Ive 4 weeks left an every thing is sweet apart from this!!!!
 

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It could be the cold, could be to do with your watering schedule or it could be nothing at all - Sativa dominent plants leaves do that naturally... Just keep an eye on it, it should be fine..
 
my leaves are doing the same thing, no dicoloration but the leaves want to curl down in a helix direction. i dont know what to do, temp stays at 80F.
 
rossbonlay said:
Interior???the stem etc??ill take a few more photos,

Yea I meant the steams and interior foliage - with my plant the exact same situation - the inner foliage still looks great but the extremities are where all the leaf cupping is occuring.

I was using this plant as a mother for the past few weeks but I was thinking of flowering her when my HPS comes in next week - I have a zillion clones now and they all need some veggin time - but now that the extremeties are looking so poor I'm worried about doing anything - it got real cold here about 10 days ago and has stayed that way - and that's when my leaves began looking droopy like yours. This was the lushest plant I think I've ever had - and now . . .
 

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Ive lookedaround and cant find the answer to this,could this be to do with temperature falling to 12-13`C at night,22-25`C during the day??

It seems you have some slight wilting of the aerial parts of the plant.

Most of the time this is caused by a deficiency of water, "moisture stress' which may have led to the accumulation of toxic ions. This could have been easily caused by the cold temperatures you are experiencing, the increase in potassium will help the plants ability to withstand unfavorable conditions such as frost or water shortages during these times. Suggest you increase the potassium and increase watering but don't overdo it.

Once you see an improvement suggest foliar feeding as well can be useful especially in cold weather when root activity is slowed down. Potassium nitrate should be fine as a water soluble fertilizer.

:)
 
have you gotten your first frost yet? it could be overwatering or over/underfeeding. give us feeding/watering schedule, whats your temps converted to faranheit? i think its the cold most likely though, my one plant has a few leaves like that from the other night when i misheard the outside temp and figured i didnt need to bring em inside.
 
Ok,its an indoor grow,400 watt cool tube,12/12,im using the cool tube vertical,and growing my plants verticaly(space wise),itsa neat little grow box,1.5m x 1.5m x 2m height,ive an exhaust(4`),an intake(4`),and a circulation fan,im using home made co2, Nutes, im using "plagron" terra bloom,pk 13-14,im using a low dose of "big bud"(for soiless mix)im compost an perlite,is this a no no?? i water every 5-6 days,depending if it needs it or not,the temperature has been dropping here in ireland and weve no heating in the house at the minute,the temp in the box drops to about 55`F(light off)lights on 75-80`F,now that im typing im thinking maybe that bud boost??the bud have seem to bulk up in the last couple o days but the leaves are in bits,!!
 
We are all guilty of over loving our plants and worrying over the slightest thing, my advice Ross - stop fretting dude, its a weed it can hack a bit of cold just watch it with the water - as long as your bud comes good who cares about the leaves ? LOL, honestly dude, they are fine - they look good and healthy colouring.. as foiler feeding, I would personally stay away from that but each to there own...
 
We are all guilty of over loving our plants and worrying over the slightest thing, my advice Ross - stop fretting dude, its a weed it can hack a bit of cold just watch it with the water - as long as your bud comes good who cares about the leaves ? LOL, honestly dude, they are fine - they look good and healthy colouring.. as foiler feeding, I would personally stay away from that but each to there own...


kul man,ya no yerself!ive had 3 crops and everytime i get to this stage(last couple o weeks)sumtin always goes wrong!!went away last time for a weekend,they got scorched to bits!!the time before that,went away,came back the resivoir on my hydro set up went dry!!!wat do ya rekon about using that bud boost(for soiless)on compost perlite??
 
It seems you have some slight wilting of the aerial parts of the plant.

Most of the time this is caused by a deficiency of water, "moisture stress' which may have led to the accumulation of toxic ions. This could have been easily caused by the cold temperatures you are experiencing, the increase in potassium will help the plants ability to withstand unfavorable conditions such as frost or water shortages during these times. Suggest you increase the potassium and increase watering but don't overdo it.

Once you see an improvement suggest foliar feeding as well can be useful especially in cold weather when root activity is slowed down. Potassium nitrate should be fine as a water soluble fertilizer.

:)


So you can buy just Potassium fert,with no other chemicals??do you study biology or somthing??
 
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