My plants are dying and no one knows why. I need help!

[Gmix]

Oh btw as it root related & can be down to infected soil i wonder if your buying your soil from garden centres

They store the soil outside & it can come with anything from bugs to mushroom spores

Buy your soil from a hydro shop that stores it inside as most good ones do

For a good time I brought soil from garden centres & couldn’t figure for the life of me why you’d buy from the hydro store with it being more expensive

Sure I’d get the odd mushroom but it seemed good enough till one day I brought home a bag filled with gnats ever since then I get my soil from the hydro store

 

[OurGas]

Yes, the dirty gross outdoors soil always allows plants to grow to maturity before randomly deciding one day to kill the mature plant.

Fungal issues always come from the stupid ag inoculants people use. Someone convinced potheads that weed needs to be infected with "Santa's beard", for extra mold in your trichomes or some shit who knows.


The top half looks extremely photosensitive. Send in a sample and see what it says. Compare to the post harvest whole plant leaf tissue standard developed by your cannabis growing community. Surely they have one by now. It's invaluable data so obviously you internet guys are on top of everything nutrient related since this is 2025 and there's no excuse to be blaming the air wind earth and fire.

 

[bili_isiro]

Hello all,
@Gmix @Grownsince95 @Oldchucky @C0pperh3ad @Choppr

Since the diagnosis of fungal diseases is a dead end, all my chances and efforts will be directed towards trying to balance the nutrients and trying to reverse the salt burn and see what happens.

So I'll go deep on study exactly which nutrients and in which quantities my plants need for the stage they are in now and see if the plant-prod products I have here will be able to supply these nutrients adequately (and stop with seacrop). I'll be more careful with the frequency of watering, so that the substrate does not dry out between waterings.

My idea is to start with a flushing with EC 1.0 solution (using CalMag only) and the next day enter with the new watering strategy and solution (already with nutrients at adequate levels). What do you think? Or you think its necessary to take them out of coco, wash the roots and then repot in a new coco?

This yellowing and burnt tips started about 40 days ago and this coincided with increasing the EC input from 2.0 to 2.2 in these mother plants (at that time my watering solution was only CalMag 13-0-13 and Grow 12-8-26). Just after that the EC output started to rise and got out of control, so as the days went by I decreased the EC input first to 2.0 again, then 1.8, then 1.6 and finally to 1.4 which I was using until yesterday.

That's my 2nd cycle, I have completed successfully the first cycle with this strain and the same watering strategy (now they are drying hanging upside down).

Thank you all again for bringing up important issues for my learning!
God bless us

 

[Grownsince95]

Hello all,
@Gmix @Grownsince95 @Oldchucky @C0pperh3ad @Choppr

Since the diagnosis of fungal diseases is a dead end, all my chances and efforts will be directed towards trying to balance the nutrients and trying to reverse the salt burn and see what happens.

So I'll go deep on study exactly which nutrients and in which quantities my plants need for the stage they are in now and see if the plant-prod products I have here will be able to supply these nutrients adequately (and stop with seacrop). I'll be more careful with the frequency of watering, so that the substrate does not dry out between waterings.

My idea is to start with a flushing with EC 1.0 solution (using CalMag only) and the next day enter with the new watering strategy and solution (already with nutrients at adequate levels). What do you think? Or you think its necessary to take them out of coco, wash the roots and then repot in a new coco?

This yellowing and burnt tips started about 40 days ago and this coincided with increasing the EC input from 2.0 to 2.2 in these mother plants (at that time my watering solution was only CalMag 13-0-13 and Grow 12-8-26). Just after that the EC output started to rise and got out of control, so as the days went by I decreased the EC input first to 2.0 again, then 1.8, then 1.6 and finally to 1.4 which I was using until yesterday.

That's my 2nd cycle, I have completed successfully the first cycle with this strain and the same watering strategy (now they are drying hanging upside down).

Thank you all again for bringing up important issues for my learning!
God bless us

Good luck to you and be careful with that well water. I'm not sure where you live but it makes a big difference. Get it thoroughly tested! If it's coming out of the well at 8+ pH it's already likely got your Ca and Mg in there. The problem is the balance, it needs to be about 2/1 or shit goes off the rails over time as accumulations build up.

Your source water is the foundation of your entire grow

 

[C0pperh3ad]

Yes, the dirty gross outdoors soil always allows plants to grow to maturity before randomly deciding one day to kill the mature plant.

Fungal issues always come from the stupid ag inoculants people use. Someone convinced potheads that weed needs to be infected with "Santa's beard", for extra mold in your trichomes or some shit who knows.


The top half looks extremely photosensitive. Send in a sample and see what it says. Compare to the post harvest whole plant leaf tissue standard developed by your cannabis growing community. Surely they have one by now. It's invaluable data so obviously you internet guys are on top of everything nutrient related since this is 2025 and there's no excuse to be blaming the air wind earth and fire.


View attachment 2402356


View attachment 2402357

This guy is either fucking with you or doesn't know what he's talking about

 

[C0pperh3ad]

Good luck

 

[bili_isiro]

Your source water is the foundation of your entire grow

Thanks man I'm looking for a lab to test my water here

 

[Grownsince95]

Thanks man I'm looking for a lab to test my water here

Is there a softener on your well connection or just a filter?

 

[bili_isiro]

Is there a softener on your well connection or just a filter?

No

 

[ChaseH]

Hello all,
@Gmix @Grownsince95 @Oldchucky @C0pperh3ad @Choppr

Since the diagnosis of fungal diseases is a dead end, all my chances and efforts will be directed towards trying to balance the nutrients and trying to reverse the salt burn and see what happens.

So I'll go deep on study exactly which nutrients and in which quantities my plants need for the stage they are in now and see if the plant-prod products I have here will be able to supply these nutrients adequately (and stop with seacrop). I'll be more careful with the frequency of watering, so that the substrate does not dry out between waterings.

My idea is to start with a flushing with EC 1.0 solution (using CalMag only) and the next day enter with the new watering strategy and solution (already with nutrients at adequate levels). What do you think? Or you think its necessary to take them out of coco, wash the roots and then repot in a new coco?

This yellowing and burnt tips started about 40 days ago and this coincided with increasing the EC input from 2.0 to 2.2 in these mother plants (at that time my watering solution was only CalMag 13-0-13 and Grow 12-8-26). Just after that the EC output started to rise and got out of control, so as the days went by I decreased the EC input first to 2.0 again, then 1.8, then 1.6 and finally to 1.4 which I was using until yesterday.

That's my 2nd cycle, I have completed successfully the first cycle with this strain and the same watering strategy (now they are drying hanging upside down).

Thank you all again for bringing up important issues for my learning!
God bless us

good luck

 

[Grownsince95]

Whatever you do just don't get discouraged if those plants don't recover.

 

[Oldchucky]

No

Mine, neither! Straight from ground to Gullett!

 

[Oldchucky]

Hello all,
@Gmix @Grownsince95 @Oldchucky @C0pperh3ad @Choppr

Since the diagnosis of fungal diseases is a dead end, all my chances and efforts will be directed towards trying to balance the nutrients and trying to reverse the salt burn and see what happens.

So I'll go deep on study exactly which nutrients and in which quantities my plants need for the stage they are in now and see if the plant-prod products I have here will be able to supply these nutrients adequately (and stop with seacrop). I'll be more careful with the frequency of watering, so that the substrate does not dry out between waterings.

My idea is to start with a flushing with EC 1.0 solution (using CalMag only) and the next day enter with the new watering strategy and solution (already with nutrients at adequate levels). What do you think? Or you think its necessary to take them out of coco, wash the roots and then repot in a new coco?

This yellowing and burnt tips started about 40 days ago and this coincided with increasing the EC input from 2.0 to 2.2 in these mother plants (at that time my watering solution was only CalMag 13-0-13 and Grow 12-8-26). Just after that the EC output started to rise and got out of control, so as the days went by I decreased the EC input first to 2.0 again, then 1.8, then 1.6 and finally to 1.4 which I was using until yesterday.

That's my 2nd cycle, I have completed successfully the first cycle with this strain and the same watering strategy (now they are drying hanging upside down).

Thank you all again for bringing up important issues for my learning!
God bless us

I am an outdoor dirt farmer! But I thought that was one of the beauties of Coco! That once you’ve screwed it up you can do a reset by flushing and kind of start all over again! Probably can’t undo the damage to the plant, but they are pretty resilient and have a way of bouncing back if you give them a chance! Don’t think you have to replace the cocoa!

 

[ChaseH]

Hello all,
@Gmix @Grownsince95 @Oldchucky @C0pperh3ad @Choppr

Since the diagnosis of fungal diseases is a dead end, all my chances and efforts will be directed towards trying to balance the nutrients and trying to reverse the salt burn and see what happens.

So I'll go deep on study exactly which nutrients and in which quantities my plants need for the stage they are in now and see if the plant-prod products I have here will be able to supply these nutrients adequately (and stop with seacrop). I'll be more careful with the frequency of watering, so that the substrate does not dry out between waterings.

My idea is to start with a flushing with EC 1.0 solution (using CalMag only) and the next day enter with the new watering strategy and solution (already with nutrients at adequate levels). What do you think? Or you think its necessary to take them out of coco, wash the roots and then repot in a new coco?

This yellowing and burnt tips started about 40 days ago and this coincided with increasing the EC input from 2.0 to 2.2 in these mother plants (at that time my watering solution was only CalMag 13-0-13 and Grow 12-8-26). Just after that the EC output started to rise and got out of control, so as the days went by I decreased the EC input first to 2.0 again, then 1.8, then 1.6 and finally to 1.4 which I was using until yesterday.

That's my 2nd cycle, I have completed successfully the first cycle with this strain and the same watering strategy (now they are drying hanging upside down).

Thank you all again for bringing up important issues for my learning!
God bless us

I hope you win the prizes in this months contest. You get these drain trays to help with draining that excess salts away easy, and they rotate for plant inspection. Some seeds, and an environmental controller. After a setback like that, you could use something uplifting.

Here is the link. If they take it down again, we know the contest is rigged and we should protest against that big time. That would be a violation of fairness.

POTM Nominations - Mar 2025

Post- https://www.thcfarmer.com/threads/my-plants-are-dying-and-no-one-knows-why-i-need-help.167722/ Grower- @bili_isiro Strain- Glue 31 compound genetics

www.thcfarmer.com

I want everyone reading this message to vote for this guy in the competition. I had to renominate him because some jerks dont want him to win. Make your vote for this grower. It's what Jesus would do. Let's give em a hand up.

 

[GNick55]

I hope you win the prizes in this months contest. You get these drain trays to help with draining that excess salts away easy, and they rotate for plant inspection. Some seeds, and an environmental controller. After a setback like that, you could use something uplifting.

Here is the link. If they take it down again, we know the contest is rigged and we should protest against that big time. That would be a violation of fairness.

POTM Nominations - Mar 2025

Post- https://www.thcfarmer.com/threads/my-plants-are-dying-and-no-one-knows-why-i-need-help.167722/ Grower- @bili_isiro Strain- Glue 31 compound genetics

www.thcfarmer.com

I want everyone reading this message to vote for this guy in the competition. I had to renominate him because some jerks dont want him to win. Make your vote for this grower. It's what Jesus would do. Let's give em a hand up.


View attachment 2402932

relax buddy,..

 

[Phyto]

Hello all,
@Gmix @Grownsince95 @Oldchucky @C0pperh3ad @Choppr

Since the diagnosis of fungal diseases is a dead end, all my chances and efforts will be directed towards trying to balance the nutrients and trying to reverse the salt burn and see what happens.

So I'll go deep on study exactly which nutrients and in which quantities my plants need for the stage they are in now and see if the plant-prod products I have here will be able to supply these nutrients adequately (and stop with seacrop). I'll be more careful with the frequency of watering, so that the substrate does not dry out between waterings.

My idea is to start with a flushing with EC 1.0 solution (using CalMag only) and the next day enter with the new watering strategy and solution (already with nutrients at adequate levels). What do you think? Or you think its necessary to take them out of coco, wash the roots and then repot in a new coco?

This yellowing and burnt tips started about 40 days ago and this coincided with increasing the EC input from 2.0 to 2.2 in these mother plants (at that time my watering solution was only CalMag 13-0-13 and Grow 12-8-26). Just after that the EC output started to rise and got out of control, so as the days went by I decreased the EC input first to 2.0 again, then 1.8, then 1.6 and finally to 1.4 which I was using until yesterday.

That's my 2nd cycle, I have completed successfully the first cycle with this strain and the same watering strategy (now they are drying hanging upside down).

Thank you all again for bringing up important issues for my learning!
God bless us

If you want to be thorough I'd run three times the volume of the pot with distilled water, that will flush the built up salts/nutes out of the coco. Make sure the pots don't sit in runoff water, EVER. After that immediately feed with your new feeding regime. Coco likes to be fed daily, never let it dry back! Until you get a handle on your source water you can use distilled (0.0 ec) or even water from the machines you sometimes see in front of grocery stores (it's cheaper by the 5 gal). If using distilled, R/O or machine water you MUST use calmag in addition to the nutes. Distilled/R/O is devoid of everything.

 

[Oldchucky]

Don’t you just have to keep flushing until the runoff is down into the low to mid hundreds? Who knows how much water that will take! Then start ramping it back up slow slowly? And see how the plants respond? I think they even make flushing AIDS! Don’t know if they work or not. Just two cents from the peanut gallery!

 

[Phyto]

Don’t you just have to keep flushing until the runoff is down into the low to mid hundreds? Who knows how much water that will take! Then start ramping it back up slow slowly? And see how the plants respond? I think they even make flushing AIDS! Don’t know if they work or not. Just two cents from the peanut gallery!

I’ve never had to use more than 3 times the pot volume in water. If the pots are 5 gal, dumping 15 gallons of water will clear it. I use that formula for soil and coco is easier to flush. They do make flushing aids, “sledgehammer” is the Fox Farms version, I personally think they’re unnecessary, and just separate a grower from their money, but to each their own.

 

[bili_isiro]

If you want to be thorough I'd run three times the volume of the pot with distilled water, that will flush the built up salts/nutes out of the coco. Make sure the pots don't sit in runoff water, EVER. After that immediately feed with your new feeding regime. Coco likes to be fed daily, never let it dry back! Until you get a handle on your source water you can use distilled (0.0 ec) or even water from the machines you sometimes see in front of grocery stores (it's cheaper by the 5 gal). If using distilled, R/O or machine water you MUST use calmag in addition to the nutes. Distilled/R/O is devoid of everything.

@Phyto @Oldchucky
Yesterday morning I did something similar to it, I flush mother plants with 3x pot volume but with a new feeding solution with 1.2 EC and equilibrated NPK and KCaMg ratios. The runoff EC was 1.2-1.4.
I'm still using my well water, I'll handle it but I don't think that it has too much Ca or Mg once its EC is 0.1.

 

[Bangorbuds]

Hi guys,

I'm new here and desperately looking for help. I've done a lot of research and talked to several people, but I haven't found a solution yet.
I'm having the same problem with my mother plants and the clones I took from them.

My mother plants are almost 4 months old. Strain: Glue #31 compound genetics.
30 days ago, they started to show burns on the tips of the upper leaves. These burns spread throughout the leaf until they kill the entire leaf.
The new leaves grow smaller and smaller until the problem takes over the entire plant and it dies (I've already lost 5 plants in the same way).

I uploaded some photos and a video so you can better assess the situation.
Does anyone have any idea what's attacking my plants?

Watering and Grow Room Information
Sealed room
Coconut fiber soil
2 gallon pots
Strain: Glue #31 Compound Genetics
Input EC 1.4 / Output EC 1.8-2.2
Input pH 6.0 / Output pH 5.9-6.5
Runoff 30-40%
Watering once a day (0.5L to 1L depending on the plant)
PPFD 350-450
CO2 500-800ppm
Room temperature 25-27°C / 77-80°F
Room humidity 60-70%
Watering solution: plantprod calmag 13-0-13 (1g/L), ppmj grow (1g/L), silicate (0.4g/L), seacrop (1mL/L) and H2O2-hydrogen peroxide (1mL/L)

Tkx a lot!

I would check to see if you have a root bound situation or are your plants to close to your lights? I’m an outside grower and I have seen something similar and it was root bound