Plants curling leaves, should I worry ?

LokoTrashman

Active Member
Hey guys, so my plants are now in Day 18 since they sprouted. They have been transplanted about 5 days ago, and they seem to me to be doing fine, no stress visible on them. However in the last few days 2 of my plants have a leaf curling issue that keeps me worried. You can see in the attached images.
The curling is not very serious, compared to some other plants I have seen online, but I would really like to know what to do to insure my girls will grow healthy.
Also, this coming Saturday the plants will be 3 weeks old, and I was thinking of putting them into flowering ( im trying to do a fast grow ), do you think they might be to small to flower yet ?
At time being they are all under a 25W CFL with a small PC fan blowing air on them, on a 18/6 light cycle.
Please let me know.
 

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LokoTrashman

Active Member
The soil is a mixture of soil from my garden and cow manure (the manure is 2 years old, so its not very strong as to burn my plants). As you know manure is a fertilizer used a lot around the country side, and thanks to it my soil is quite fluffy. I water the pots and in 3 to 4 days its almost completely dried, so I dont think it retains to much water or anything like that.
Aeration wise I cant say, I know many people use perlite to their soil mix for good aeration, but where I live finding perlite is quite hard. Do you think this could be the cause of the curling ?
What is a good substitute for prelite ?
And what about flowering, you think its to early ?
 

booms111

Well-Known Member
your soil is awful. It looks like tan bark almost. You want soil soft enough that if you put it in a pillow case you could sleep on it. You need perlite in there to. Id recommend getting some HP promix and mixing in Fox Farm Ocean Forest at different ratios based on stage of life of plants. Id order it if i couldnt find it at a local store.
 

UncleReemis

Well-Known Member
Yeah man, you're gonna have stunted plants til harvest if you keep them in that soil. It's no biggy though, you should be able to transplant to a healthier soil without many difficulties. I'd recommend trying to break up some of the dirt around the roots when you transplant.
 

Dr. Who

Well-Known Member
Depending on what and how you feed that soil isn't that bad. It DOES need some perlite though! Say about 20-25% by volume down the road.
Substitutes for perlite.
Vermiculite (good)
Rice hulls (great - parboiled)
Cotton Hulls (good)
Pine bark ground (works ok)
 

UncleReemis

Well-Known Member
Bigger roots = bigger plant potential and max growth rate
Lighter fluffy soil = quicker and more evenly spread root growth

Light fluffy soil = Bigger roots = Max growth rate (excluding other inhibitors)
No offense to OP and his soil, but idk how you guys can think that soil is okay for cannabis. I'll leave it at that. Best of luck to ya!
 

LokoTrashman

Active Member
Thank you all for you concern and advices. I plant on doing some 12/12 from seed with 3 more seeds. I will for sure go buy some soil that is more suited for weed growing.
This being a first grow for me I sure did learn and still am learning loads of good info for future grows.
Later Ill add some more pics for you to see progress.
 

sacro

Active Member
I had some curling like that. The "teeth" on my leaves would eventually bend in a way that made the fanleaves look rounded instead of pointy teeth edged. Anyways, i kept schedule and fed/watered with a little extra potassium and calmag. About 2 weeks later the curling stopped. I took out those leaves trimming my girl and never saw it again

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Dr. Who

Well-Known Member
Bigger roots = bigger plant potential and max growth rate
Lighter fluffy soil = quicker and more evenly spread root growth

Light fluffy soil = Bigger roots = Max growth rate (excluding other inhibitors)
No offense to OP and his soil, but idk how you guys can think that soil is okay for cannabis. I'll leave it at that. Best of luck to ya!
It's what he's got right now. When transplanting up to the finish pot, he should improve the new soil with out a doubt. But for now this is what he's stuck with till then.

OP, yeah manure has some nutrition. But it's NOT going to carry you to the end. Your going to have to feed it something.

Here is a nice starting/beginners organic water only soil that you build.
http://forum.grasscity.com/organic-growing/1116550-easy-organic-soil-mix-beginners.html

Down the road you can explore:

Sub's Supersoil
The Rev's TLO (True Life Organic's)
These are some advanced organic water only styles.
I run variations of the 3 and enjoy great results!
 

LokoTrashman

Active Member
As I said before here are some pics taken today.
Only one of the plants seems to be developing slow, and maybe has some issues, but the other 2 look great.
As for feeding, my mom has some nutes for her tomatoes and that kind of stuff, I could feed them that in the future, question is, when do you think I should start feeding them ? Tomorrow I plan in putting the girls in flowering (they will be 3 week old tomorrow on 18/6 from sprouting), and Im gonna water them, the soil is dry and pretty crisp.
Lemme know ;)
 

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LokoTrashman

Active Member
I can see, that plant looks like a boss compared to mine :D , I wish they got bigger but they developed very slow ,probably due the bad soil and transplanting/stress.
So, any idea when I should nute, given that tomorrow they go under 12/12 ?
 

Zomgshaman

Active Member
Well there's no telling what nutrients are in your soil or left in your soil. So my advice would be to read your plant if it shows any signs of deficiency figure out what it is and then feed it that.
 

sacro

Active Member
When to feed is a hard question. Only you know whats in your soil. Also the slow growth could be poor lighting along with terrible soil ;)

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