What's causing the leaves to curl inward?

I have one plant were the leaves are curling inward. It is in a mix of 8 parts MG potting mix, 2 parts perlite, and 1 part Sunshine mix #4. I used MG All Purpose Plant Food and Fox Farm Kangaroot and Microbe Brew. It is the only plant doing this. It was a seed 32 days ago. It was next to the oscilating fan. I had yellowing of the lower leaves with all the plants, until the third week, when I started using full strength feeding. I have half my plants in MG and half in FF. My intent is to grow with both and compare the results to each other. All but 2 came from the same bag, the 2 are Barney's Farms LSD. This is one of the bagseed.

Anybody out there?

heat stress possibly, what temps are you dealing with? lighting?

the lower leaves yellowing is from N deficiency. what are you nutes called? whats your npk? i usually say feed every other watering with nutes around 10-10-10, but your soil is already nuted so i would say feed like 1/3 strength if using commercial nutes.

those severely canoeing leaves = maganese deficiency. Mn deficiency can be caused by too much Mg(magnesium) in the soil, too much Mg blocks Mn... but idk this problem doesnt come up often on here. the solution is to folair feed for now with 1/6 strength nutes every day, make sure to spray the bottom of the leaves cuz thats where the stomata(1000's of little micro mouth on the leaves) are located.

It hasn't even established roots in the soil let alone needs a full strength feed imo, being directly in front of an oscilating fan might explain the leaf curl maybe. Both MG and foxfarms are well nuted soils to my knowledge but i think sunshinemix #4 is neutral in nutes if i remember correctly.

I see very few Manganese deficiencies compared to nute lock and over feeding, in fact i barely know what one looks like, they certainly aren't common when using most ferts. Too much magnesium in the soil will lock out a lot of nutrients, calcium being the main one that i know off. Peace

Heat most likely is the issue that is causing this.
Increase you air movement and hope it grows out of it~

MrGhettoGrower said:

Heat most likely is the issue that is causing this.
Increase you air movement and hope it grows out of it~

Click to expand...

If you have heat problems with the plant next to an oscilating fan i would hate to see the ones futher away than this one. Might suggest the whole grow is too hot. Peace

ya...heat could explain it...how is your drainage? looks to me like the plant is trying to decrease top surface area, and trying to breathe by creating more stomata surface area...humidity can do this too.

Was this plant just put under HID lights. If none of the other ones are doing it, then maybe it was in a spot within the grow room that wasnt recieving that much light and then you moved it right under the light.

All the other plants seem fine. The leaf yellowing stopped once I started nutes. It was, and had been, at the edge of the lighted area when I took the pic. I've since moved it. As it's only the one plant, I'm starting to think that maybe the ferts in the MG aren't all that evenly mixed? Drainage is good, humidity runs 40-50%. It started right after I added CO2. The CO2 outlet is taped to the back of the fan. The CO2 should be getting dispersed pretty quickly, tho. The NPK of MG all purpose is 24-8-16. The Mo is 0.0005%, the Mn is 0.05% per the label. The temps were running 88-91, but I've lowered the thermostat and are now around 83-85. The two LSD were feminized seeds, the others were just bagseed. This is one of the bagseed. It doesn't seem to be getting worse. There's a 50-50 chance it will be a male anyway.

O its bag seed ! Forest Gump said it best. I went through 7 different types of bag seed gefore I found one that worked GREAT in my system. Sounds like you have your game face on and you know what you are doing man. Must have been the high heat and its closness to the fan causing it to transpire more than the others.

Cheers

Red1966 said:

I have one plant were the leaves are curling inward. It is in a mix of 8 parts MG potting mix, 2 parts perlite, and 1 part Sunshine mix #4. I used MG All Purpose Plant Food and Fox Farm Kangaroot and Microbe Brew. It is the only plant doing this. It was a seed 32 days ago.

It was next to the oscilating fan

Click to expand...

. I had yellowing of the lower leaves with all the plants, until the third week, when I started using full strength feeding. I have half my plants in MG and half in FF. My intent is to grow with both and compare the results to each other. All but 2 came from the same bag, the 2 are Barney's Farms LSD. This is one of the bagseed.

Click to expand...

Some young plants go droopy and canoe etc when a fan is blowing right on them, move the fan. Hope that gets you outta trouble big red.

looks to me there thirsty wouldnt most common issues be either humidity or under watering for those things to appear ???

New leaves are coming in and don't have this. I moved it any from the fan and also moved the fan farther from the whole grow. I should have mentioned that I gave all the plants a dose of FF Kangaroots and Microbe Brew. Looking at my records, I see I gave those ferts after I noted the curling, so that ain't it. Unless it starts doing it again, I think I'll just ignore it. It's only affecting one plant and may have stopped. The plants I seeded in MG Seed Starter Mix far outgrew the ones in FF Light Warrior, but since I've re-potted in FF Ocean Forest and MG Potting Mix. the FF plants have caught up and surpassed the MG. I've had trouble with the soil moving around when I water. I ordered a fancy-schmancy watering can that's suppose the give a "Gentle Rain", but you can't trust advertising. What do you all use?

Red1966 said:

New leaves are coming in and don't have this. I moved it any from the fan and also moved the fan farther from the whole grow. I should have mentioned that I gave all the plants a dose of FF Kangaroots and Microbe Brew. Looking at my records, I see I gave those ferts after I noted the curling, so that ain't it. Unless it starts doing it again, I think I'll just ignore it. It's only affecting one plant and may have stopped. The plants I seeded in MG Seed Starter Mix far outgrew the ones in FF Light Warrior, but since I've re-potted in FF Ocean Forest and MG Potting Mix. the FF plants have caught up and surpassed the MG. I've had trouble with the soil moving around when I water. I ordered a fancy-schmancy watering can that's suppose the give a "Gentle Rain", but you can't trust advertising. What do you all use?

Click to expand...

Bagseed can mean very bad genetics, is bit like a lottery with these. For watering i just pour out of a half litre jug, my plants take 1.5litres to give good runoff then i let drain for a few mins and back in the grow room.

I think the idea with a watering can is to stop soil compaction and to mix air in with the water. Peace

USMC said:

O its bag seed ! Forest Gump said it best. I went through 7 different types of bag seed gefore I found one that worked GREAT in my system. Sounds like you have your game face on and you know what you are doing man. Must have been the high heat and its closness to the fan causing it to transpire more than the others.

Cheers

Click to expand...

Yeah, first grow, didn't want use up my store-bought seeds first time out. Did plant 2 Barney's Farm LSD, tho. Wanted to get SOME good smoke for all the effort! Might take some clones off them, too. Have G-13 and Big Bud seeds I'm eager to start also.

Compare the bagseed to the two reputable strains you bought. If the bagseed suffers badly but the Barneys farm two do well then the bagseed were just being problematic or bad genetics. Peace

yeah bagseed is a kinda hit and miss thing. they will all grow but the speed usually varies. i got 40 bag seed this year, out of them 2 were huge and i love them, 35 were average, and 3 were runts and they got killed. i would rather have bag seed from some good bud then pay soo much for seeds, but i still buy them.

one of mine has that leave curl thing check the colour if ther rite donw worry about it chances are itel prolly fall of wen flowirng anyways

dirtysnowball said:

yeah bagseed is a kinda hit and miss thing. they will all grow but the speed usually varies. i got 40 bag seed this year, out of them 2 were huge and i love them, 35 were average, and 3 were runts and they got killed. i would rather have bag seed from some good bud then pay soo much for seeds, but i still buy them.

Click to expand...

The first seeds you produce from bought seeds are generally good but breed them on again and things might get worse. Peace