Seedling turning yellow, need help!

txag · Apr 25, 2015

So I have a seedling that is 9 days out of soil, and her first set of leaves and cotyledons are turning yellow. I'm not too worried about the cotyledons, but the serrated leaves are starting to concern me. I transplanted to a ~6 gallon container with a 3:1 soil/perlite ratio. Have not fed any nutes whatsoever. Any input is appreciated!

vostok · Apr 25, 2015

water well, but at this age its the temperatures of the soil that is of concern ....keep her about 72f ///22c with air at about 77f/25c

to prevent the death valley effect on your plant ensure you fill the pot mixture to within 1/2 and inch of the rim ta

Bugeye · Apr 25, 2015

What type of soil are you in? A seedling mix or something with nutes? At 9 days old about all I give mine are a topdressing of earthworm casings and they are in seedling mix. If you recently transplanted into soil with nutes from a seedling mix, it may be that the new growth is just coming in with more green from the fresh nitrogen in the soil. You have a better idea of the true color so if you think it is fading, then I would assume something is off on ph or nute levels. More info needed.

txag · Apr 25, 2015

to prevent the death valley effect on your plant ensure you fill the pot mixture to within 1/2 and inch of the rim ta

I'll have to wait till she grows a bit. She was only outside for the pic. Grow room temps are ~75 w/ small fan.

I'm using a potting soil w/ .07-.05-.06 ratio (dont remember the name). Originally planted into peat cup.... I'm wondering if it is something caused by the nutes in the soil since the roots have expanded past the peat and are now in the actual soil.

txag · Apr 25, 2015

bugeye, the yellowing seems to be starting from the leaf tip and moving back towards nodes, which makes me thing it could be a N def or ph is too low. It started at the first set of leaves (oldest), and seems to be moving towards the new growth.

Heres a few more pics for comparison of color progression. (Thurs, yesterday, today)

SnotNazi · Apr 25, 2015

I personally start feeding from the get go but it all depends on your soil mixture. By the looks of it you need a light feeding. The other thing you could try is a 1/4 mixture in a spray bottle and give them a good misting. This brought the colour right back in my leaves just a month ago. You definitely transplanted way too early but otherwise she looks good.

Bugeye · Apr 25, 2015

txag said:
bugeye, the yellowing seems to be starting from the leaf tip and moving back towards nodes, which makes me thing it could be a N def or ph is too low. It started at the first set of leaves (oldest), and seems to be moving towards the new growth.

Heres a few more pics for comparison of color progression. (Thurs, yesterday, today)
View attachment 3404190 View attachment 3404191 View attachment 3404193

I think it is something with the new soil too. I'd check the ph on it for sure.

Bugeye · Apr 25, 2015

BTW, did you water them into the new soil, to vostok's point? That soil looks very dry for being transplanted today or yesterday.

vostok · Apr 25, 2015

txag said:
bugeye, the yellowing seems to be starting from the leaf tip and moving back towards nodes, which makes me thing it could be a N def or ph is too low. It started at the first set of leaves (oldest), and seems to be moving towards the new growth.

Heres a few more pics for comparison of color progression. (Thurs, yesterday, today)
View attachment 3404190 View attachment 3404191 View attachment 3404193

This is your issue ....standard nute burn ...peat holds water and nutes ...nutes in the water of the peat has thrown the ph out, but that didn't stop ya babe until it tasted the actual soil once grown thru the pot, again it s a ph thing time for a gentle flush

to my blog: https://www.rollitup.org/Journal/Entry/flush-baby-flush.30160/

nomofatum · Apr 25, 2015

looks like it's too dry to me

txag · Apr 25, 2015

Bugeye said:
BTW, did you water them into the new soil, to vostok's point? That soil looks very dry for being transplanted today or yesterday.

Yeah, I watered right after I transplanted

vostok said:
This is your issue ....standard nute burn ...peat holds water and nutes ...nutes in the water of the peat has thrown the ph out, but that didn't stop ya babe until it tasted the actual soil once grown thru the pot, again it s a ph thing time for a gentle flush

Giving her some more water now to complete the flush. Thanks guys!

txag · Apr 25, 2015

After flushing, im worried that the amount of soil related to the size of the root system will cause the soil to not dry out....

SnotNazi · Apr 25, 2015

I disagree with it being a nute burn . . . there's no browning and your new growth is vibrant. This is a pic of my girl over a month ago with nute burn and one of last night.

SnotNazi · Apr 25, 2015

My girls can go 10 days between watering - you can see in my recent pic that she's wilting and that's due to over watering ( read my other posts, you'll see why) Let them dry out before watering again. Use a spray bottle with just water for now and see if the colour bounces back.

txag · Apr 25, 2015

SnotNazi, mine def. doesnt have the brown spots on the edges. Wishing I would have held off on the transplant. Worried shes too small to properly absorb the water from the soil

nomofatum · Apr 25, 2015

The top of the dirt is dry, I highly doubt you have any burn or deficiency. Just water until totally saturated and 20% of water used comes out the bottom. It should be good for almost a week after, then repeat, once it gets much larger you will need to water the same way, but more often.

Make sure all the dirt is totally saturated.

SnotNazi · Apr 25, 2015

txag said:
SnotNazi, mine def. doesnt have the brown spots on the edges. Wishing I would have held off on the transplant. Worried shes too small to properly absorb the water from the soil

Don't worry these plants are extremely resilient. Just leave her alone till shes dry. My first grow I transplanted three times all at the wrong times and I still got a quality bud in the end.

txag · Apr 25, 2015

SnotNazi said:
Don't worry these plants are extremely resilient. Just leave her alone till shes dry. My first grow I transplanted three times all at the wrong times and I still got a quality bud in the end.

Ended up putting her in a 1 gal pot. I know it wasnt necessary, but I just feel I have more control with a smaller container. I plan on vegging her in the 1 gal pot and putting her in a 3 gal (probably) a week before i flip the lights. This plant is blue dream, and I dont think I have the setup to flower her properly if I grew in a huge container

moondance · Apr 25, 2015

Light, air, water, kelp juice if you want I like it, Leave it the fuck alone and go do something else. The more you ignore them the better they are LOL.

txag · Apr 25, 2015

moondance said:
The more you ignore them the better they are LOL.

So true haha :mrgreen:

Seedling turning yellow, need help!

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