Urgent help - leaves Corkscrewing :(

Jimdamick said:

I go with genetics, if they are clones. I have had weird leaves from a couple of plants, but not 3 or four in the same group. If not clones, no overheat, standard soil and nutes, then it might be a mineral def, but very rare in an outdoor grow. I would use a foliar spray with a seaweed base ( Maxicrop) for added minerals, but after that, all the bases should be covered. Good luck

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Nope, no clones grown from seed and two strains. I'm actually using coco medium with coco specific hydroponic nutes. I guess I could try a foliar spray also. Ty

good luck with it mate, I do like a good coco grow, but I have fallen in love with my mega DWC buckets under a scrog

BAMS said:

you have good green there so maybe a flush and then supp in some epsom salt into the coco, then feed your regular routine.....Not sure of your routine but when I use to grow coco (which I some times revert back to a coco grow every now and again), I had a 3 day schedule of; Day 1 - Water with CalMag only at 300ppm, Day 2 - Water with CalMag with base nutrient mixed in @ 500ppm-600ppm (bloom was a little higher 900-1000), Day 3 - Dry day, no feed or water, let the roots have their dry time, then repeat back at Day 1

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I'm still trying to get my watering routine going. Last season I had about 25% perlite in the coco and smaller 30L pots. I'd water approx. 65% nute strength daily, once or twice per day depending on the heat or how much the plant drank. I just flushed periodically with dH20 when the plants looked a little unhealthy so maybe 3-4 times total per season.

Right now I'm doing 50% nute strength watering as needed based on pots dryness. So maybe 2-3 days between water at the mo. I don't have an EC meter so I go low on nutrient strength to try to be safe.

I'll try the flush next water and add a little Cal/Mag take it from there...

a rough guide if you use GH CaliMag is 1ml per litre, gives me perfect reading of 300 everytime

BAMS said:

a rough guide if you use GH CaliMag is 1ml per litre, gives me perfect reading of 300 everytime

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Cheers

OK so there is not a lot of choice for Cal/Mag supplements in my area. There's one but I think it's designed specifically for soil:

https://2ecffd01e1ab3e9383f0-07db7b9624bbdf022e3b5395236d5cf8.ssl.cf4.rackcdn.com/Product/72036c6f-5c5b-4e02-bbd8-17e07dba97e3.pdf

It's the Eco-flo dolomite lime one.

And another: Cal/Mag/nitrate. With extra N

http://www.hydroponicnursery.com.au/product/growth-technology-liquid-calmagnit-500ml/


I think I would prefer the Eco-flo dolomite but is it OK in coco. And the extra N in the other is that going to be a problem?

Thanks

I take it your in Australia?

^^^The secret's out lol

order your CalMag from Accent Hydroponics in NSW or Glandore Hydroponics in Adelaide

http://www.accenthydroponics.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=1521&virtuemart_category_id=25

or

http://glandorehydro.com/shop/additives/bloom-cal-mag-1-litre/

BAMS said:

all from seed, eliminates genetics.
and coco is very notorious for "drawing" magnesium and needs to be supplemented with either a 2 tsp/gallon mix of epsom salt as a drench in between feeds, or use it as a foliar spay. Luckily cannabis is a calcium loving plant and very hard to overdose calcium, so adding CalMag to your feeding water, but being your using coco specific nutes, read the label and see how much calcium and magnesium are already in those nutes (that's what makes them specificly designed for coco, is the addition of calcium and magnesium to compensate this characteristic of coco)

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All from seed means it's much more likely genetics. He could take clones from them and put them into a different medium to clear it up and not potentially fuck up his rather healthy looking plants otherwise.

OGEvilgenius said:

All from seed means it's much more likely genetics. He could take clones from them and put them into a different medium to clear it up and not potentially fuck up his rather healthy looking plants otherwise.

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sorry should have clarified that all the seeds being from a seedbank and from different strains and all at different ages. I assumed the context was there so I didn't clarify

If all seeds, and each seed is a different strain and or seed bank then genetics can't really be factored in

BAMS said:

sorry should have clarified that all the seeds being from a seedbank and from different strains and all at different ages. I assumed the context was there so I didn't clarify

If all seeds, and each seed is a different strain and or seed bank then genetics can't really be factored in

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He's never grown these plants before and they are all of a different genetic makeup. Of course genetics will be a possible factor.

And given his plants look otherwise perfectly healthy with no deficiencies or even kind of deficiencies I'm gonna say it's the most likely factor. It could be a pest - and that would be more likely if these were all clones of the same plant, but they are not.

Twisting leaves is not that uncommon and it is genetic. I'm currently flowering one - buds are fine, leaves are fucked. It happens.

My advice to him is to not stop what he's been doing because he's doing it well and to just run with it for now.

OGEvilgenius said:

He's never grown these plants before and they are all of a different genetic makeup. Of course genetics will be a possible factor.

And given his plants look otherwise perfectly healthy with no deficiencies or even kind of deficiencies I'm gonna say it's the most likely factor. It could be a pest - and that would be more likely if these were all clones of the same plant, but they are not.

Twisting leaves is not that uncommon and it is genetic. I'm currently flowering one - buds are fine, leaves are fucked. It happens.

My advice to him is to not stop what he's been doing because he's doing it well and to just run with it for now.

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I think we are on different pages here as to what I mean and what you mean...5 out of 5 plants from seeds of different strains are obviously to say that genetics of the strain are not causing the corkscrew effect. Also I was not aware in the 8 years (12 months consistently indoors)I have been growing that corkscrewing of the leaves was common, actually I can only remember maybe 1 or 2 plants that I had that corkscrewed leaves and these seeds were from Herbies, and at end of the day I tossed them and started fresh. Yes they do look green and healthy and I'm not weighing out your theory nor am I dead set on mine, but if you look at the odds of things I would say that there is a parameter that is missing in the media that the roots are not happy with as 5 out of 5 doing the exact same thing.....well amazes me that some one could be so unlucky to get 5 different strains all with the same defect

Ok guys I‘m pretty sure it was just a straight calcuim deficiency. My ph was a little low at 5.8 (6.2 to 6.5 is best for calcium) and I was spraying leaves at night with straight tap water which may also draw more calcium from leaves and I was using canna coco and probably should have used canna brand coco nutes. So I‘m supplementing with cal/mag/ foliar and feeding once per week. Just one question though I feed with straight cal/mag in tap water at ph 6.2 and EC = 1.4. Is it ok to go as high with tds/ec/ppm for calmag as i do my regular nutes?

I measure in ppm, but if I am not mistaken 1.4EC is about 980ppm...give or take, I know there is not a direct relationship between EC and ppm, but that's from conversion charts. Anyway I usually just usually make up a huge batch, say 100 litres at a time of just CalMag water with ppm of 300. I then take from this tank to just water or to add my base nutes to it. So in answer to your question is 300ppm plus base nutes to take veg ppm to about 600, and veg ppm to about 1000...depending on the strain and its sensitivity to nutrient strengths.

OGEvilgenius said:

He's never grown these plants before and they are all of a different genetic makeup. Of course genetics will be a possible factor.

And given his plants look otherwise perfectly healthy with no deficiencies or even kind of deficiencies I'm gonna say it's the most likely factor. It could be a pest - and that would be more likely if these were all clones of the same plant, but they are not.

Twisting leaves is not that uncommon and it is genetic. I'm currently flowering one - buds are fine, leaves are fucked. It happens.

My advice to him is to not stop what he's been doing because he's doing it well and to just run with it for now.

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Although they may look healthy to the eye the growing tips are really wilting and look like they make break with little pressure. I'm pretty sure this is what's referred to as blossom-end rot. I also have the following calcium specific deficiency symptoms:
slow growth
twisted growth
abnormal growth

Here's a good link on Calcium deficiency:

http://www.growweedeasy.com/calcium-deficiency-cannabis

And a video of peppers/chillis with similar symptoms:


Also I will mention that the most affected plants had some kind of heat stress prior to the leaves twisting but appeared to make a full recovery. While I can't entirely rule out stress from pests I really don't think it's genetics.

This is caused by your Vapor Pessure Deficit being out of wack, look up VPD for cannabis and it will bring up a VPD calculator and an explanation. This is a very common issue but is almost always misdiagnosed as braid mites or various nutrient issues. These issues contribute to the leaf deformation but are not the cause, VPD and deficiencies create a cycle between the 2 that is exacerbated by each others effect on the plant. I recently had the same issue, I changed the climate to fast and too drastically and this was the result. Most plants are resilient enough to never have major VPD issues but many stains ARE hyper sensitive to VPD. Have you moved the plant to a new climate with in the last month and a half ? Inform yourself on the massive effect VPD has on a cannabis plant,then correct VPD issue then asses the plant for contributing deficiencies. Check my plants out on Thcfarmer just pulled my ladies thru this issue @ AngeRBizcuTT480 thcfarmer.com

I doubt he’ll be checking them out. Him or this thread hasn’t been seen for 6 or 7 years