Seedling Turning Yellow From Inside Out
- Thread starter Clownin
- Start date
jackspratt61
Active member
Tell us about your mix.
YellowCanaryConsulting
Active member
P and S
YellowCanaryConsulting
Active member
And K and B
It doesn't usually happen this early, but a plant's newest growth is often a mountain dew color- neon green/yellow like that. Usually that happens in veg when a plant hits its stride and explodes, growing significantly overnight, and it is young tissue that hasn't fully developed under light yet.
If your lights are dim or too far away sometimes this neon new growth can take a while to turn to the usual dark green. My first guess would just be to move the lights 10-20% closer, and your soil is actually fine.
This will sound weird, but the few people who advised you nutrient fixes have more experience than i do, and are more likely to be right than me, but even so, I would try the light thing first. If you try the light thing, there is nothing to lose- a slightly over-lit plant can recover in no time, but soil that is locked out or too hot is almost impossible to undo 100%, not to mention, a deficiency in a plant doesn't mean lack of nutrient in soil, it means lack of nutrient availability in soil. Adding nutrients in should always be the last thing you try. Even once you've narrowed it down to a deficiency for sure, you should consider pH/EC/availability causing "lock out" or inability to uptake.
If your lights are dim or too far away sometimes this neon new growth can take a while to turn to the usual dark green. My first guess would just be to move the lights 10-20% closer, and your soil is actually fine.
This will sound weird, but the few people who advised you nutrient fixes have more experience than i do, and are more likely to be right than me, but even so, I would try the light thing first. If you try the light thing, there is nothing to lose- a slightly over-lit plant can recover in no time, but soil that is locked out or too hot is almost impossible to undo 100%, not to mention, a deficiency in a plant doesn't mean lack of nutrient in soil, it means lack of nutrient availability in soil. Adding nutrients in should always be the last thing you try. Even once you've narrowed it down to a deficiency for sure, you should consider pH/EC/availability causing "lock out" or inability to uptake.
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jackspratt61
Active member
T
That's alot of compost. Coco is already high in na and most cow compost is as well. Calcium with balanced p is job #1. What sources do you have of each?
A couple of possibilities. When the pH of a growing media rises above 7 the plant's tops will turn yellow. The reason is micronutrients need an acidic pH to break down the nutrients into a soluble range.
Another possibility is that the pH is too low causing nutrients to slightly toxicate the growing media causing the plants to yellow. You need to do a pour-thru on a watering day and catch some of the runoff and test the ppm and pH. If your pH is in a good range then the EC is off. Good luck and keep us posted.
Another possibility is that the pH is too low causing nutrients to slightly toxicate the growing media causing the plants to yellow. You need to do a pour-thru on a watering day and catch some of the runoff and test the ppm and pH. If your pH is in a good range then the EC is off. Good luck and keep us posted.
goingrey
Well-known member
I agree, new growth is often pale especially if it is growing fast. Possibly nothing to worry about at all.
However, I would not move the lights closer. It's just a baby, don't want to burn it.
This sounds like what I was saying, just way smarter, more accurate, and more concise.. lol. I still think lighting can sometimes be a factor in situations like this.
You are moving in the right direction now friend, I see a big improvement. The one thing that has helped me more than anything else growing weed was buying a TDS and pH meter. I recommend anyone serious about growing good medicine get one and learn how to use them.
The best way to learn how to use meters is to test everything. Test all liquids coming in and going out of the container and after a while, you will know what is what without testing anything.
The best way to learn how to use meters is to test everything. Test all liquids coming in and going out of the container and after a while, you will know what is what without testing anything.
jackspratt61
Active member
Remove the seedling carefully and make your mix approximately 50% perlite and transplant. It will help make it easier to steer the plant and remove na and other excesses. No sense in fighting an uphill battle at this point.
Clownin
New member
Seems to be working itself out of the issue on their own. About half the plants went from looking yellow to half way decent green today after yesterday light water.
This one hardly looks like it was yellow to begin with
This one also getting better
Even the twins are looking good.
This one hardly looks like it was yellow to begin with
This one also getting better
Even the twins are looking good.
St. Phatty
Active member
The lighter green yellow-ish shade does not mean the plant is unhealthy.
