Plants Stopped Growing - Can't figure out why

C

ChenBentz

Member
My plants have just stopped growing (about 4 weeks ago), and I need to troubleshoot to find out why.

The plants are green, healthy-looking, not drooping, no nutrient burn, etc.

Off the top of my head:

1.) Light. 18/6 1000w (40cm away)
2.) Heat. 27-32C (AC Cooltube)
3.) Medium. Soil (with a bit of coco)
4.) Humidity. 40-60%.
5.) Nutrients. H&G Soil @ 1.2EC w/tap water
6.) pH. ~6.5 (sometimes a bit higher)
7.) Bugs. Slight case of fungus gnats

So, after all that I'm pretty much stumped.

Anyone have any ideas why plants with these exact conditions would just stop growing?










 
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R1b3n4

R1b3n4

Well-Known Member
Yellowing leaves look like a mag def
Magnesium.jpg

Droopy leaves look like overwatering
over-watering-cannabis-300x225.jpg

So overall im gonna guess at overwatering leading to mag def/lockout etc
 
fabizpwn

fabizpwn

Well-Known Member
Looks overwatered or underwatered OP can answer that with how often he waters them. 27-32c(81-90f) degrees is way to warm which is probably causing the leaf curling. Lower the temp to under 80 degrees and let the plants dry out or water them whatever it may be. In the description the OP says they are not drooping.... The photos show otherwise.
 
C

ChenBentz

Member
Don't know what you guys are talking about. Most of the leaves are perky.

It's not a magnesium deficiency. I've added magnesium, did nothing.

It's definitely not overwatering or underwatering. My watering schedule has been on point for years now.
 
fabizpwn

fabizpwn

Well-Known Member
ChenBentz said:
Don't know what you guys are talking about. Most of the leaves are perky.

It's not a magnesium deficiency. I've added magnesium, did nothing.

It's definitely not overwatering or underwatering. My watering schedule has been on point for years now.
Click to expand...
Lol are you trying to troll people? Those leaves are not perky, these leaves are perky.
 

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R1b3n4

R1b3n4

Well-Known Member
ChenBentz said:
Don't know what you guys are talking about. Most of the leaves are perky.
Actually in EVERY single photo you posted the leaves are drooping/pointing down
It's not a magnesium deficiency. I've added magnesium, did nothing.

It is, maybe you didnt add enough mag or give it time to work etc

It's definitely not overwatering or underwatering. My watering schedule has been on point for years now.
If that were true then your leaves would not be pointed down instead of up, magnesium deficient and tacoing along the leaves etc
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MrClone

MrClone

Active Member
Bottom leaves are drooping bad. Do you have good drain holes on bottom of pots? What is your PPM and PH? How often do you water? Do you allow run off when watering? Let me know this info and I can probably diagnose it for you.. I have an idea but want to make sure. Also what kind of water are you using? Is it water from a house with a water softener? Tap Water? RO water? Deionized ? Sewer water? :p
 
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MrClone

MrClone

Active Member
ChenBentz said:
Don't know what you guys are talking about. Most of the leaves are perky.

It's not a magnesium deficiency. I've added magnesium, did nothing.

It's definitely not overwatering or underwatering. My watering schedule has been on point for years now.
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Your asking for help but saying its definitely not what people are suggesting.. Although there is a couple points someone made that really made sense.. Although .. most answers are guesses.. With all the info I can diagnose the issue most times as this is what I do for a living when my patients order from me and have issues they call me for help. But need more info to be accurate.

Your leaves are curling down also and up so that is usually burn and nute def. let me know what I asked above and I can help u
 
CriticalCheeze

CriticalCheeze

Well-Known Member
MrClone said:
Your asking for help but saying its definitely not what people are suggesting.. Although there is a couple points someone made that really made sense.. Although .. most answers are guesses.. With all the info I can diagnose the issue most times as this is what I do for a living when my patients order from me and have issues they call me for help. But need more info to be accurate.

Your leaves are curling down also and up so that is usually burn and nute def. let me know what I asked above and I can help u
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As for nute burn and def goes i agree with you, fed to much of something and started locking out other nutes, and even tho it seems right he said, i bet ph is off a bit. possibly too low. as calcium will get locked out with to muh nitrogen under 6.5 ph but also if it is too high then mag gets locked out over 6.5 with to muh nitrogen
 
MrClone

MrClone

Active Member
CriticalCheeze said:
As for nute burn and def goes i agree with you, fed to much of something and started locking out other nutes, and even tho it seems right he said, i bet ph is off a bit. possibly too low. as calcium will get locked out with to muh nitrogen under 6.5 ph but also if it is too high then mag gets locked out over 6.5 with to muh nitrogen
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That is actually not accurate.. Nutrient lockout usually happens when the PH is to high or to low but that is less likely then being to high. It starts at 6.5 over that Iron starts to become unavailable.. if it gets above 7.5 all the metals become unavailable .. Copper Iron Manganese Zinc which would lead to discoloration actually but you should check your soil PH but I do not believe this is a lockout issue. Other wise you would have severe discoloration on the leaves in a lot of places.. Now back to my original question.. If you really want help I need you to answer the questions I asked your previously.. Otherwise I can not help you.. If you fed it to much of " something " which is so broad of an answer it does not help ( I fed it to much water to I fed it to much cat poop ).. If you gave it something and are embarrassed because of it.. That does not matter. What matters is getting your plants back to health I am not sure why you are avoiding answering things that will help you.. But .. that is your choice if you decide to let me help you or not. Put the ego to the side for 10 minutes if you really want help. Honestly it almost looks like you burned them trying something then flushed it and kept it over watered. All your leaves are sagging and in some spots if looks like you may even have a spider mite or Thrip issue. I can see the white spots on your leaves. That is not from any nutrient issue. Unless it is just from camera or something..
 
CriticalCheeze

CriticalCheeze

Well-Known Member
MrClone said:
That is actually not accurate.. Nutrient lockout usually happens when the PH is to high or to low but that is less likely then being to high. It starts at 6.5 over that Iron starts to become unavailable.. if it gets above 7.5 all the metals become unavailable .. Copper Iron Manganese Zinc which would lead to discoloration actually but you should check your soil PH but I do not believe this is a lockout issue. Other wise you would have severe discoloration on the leaves in a lot of places.. Now back to my original question.. If you really want help I need you to answer the questions I asked your previously.. Otherwise I can not help you.. If you fed it to much of " something " which is so broad of an answer it does not help ( I fed it to much water to I fed it to much cat poop ).. If you gave it something and are embarrassed because of it.. That does not matter. What matters is getting your plants back to health I am not sure why you are avoiding answering things that will help you.. But .. that is your choice if you decide to let me help you or not. Put the ego to the side for 10 minutes if you really want help. Honestly it almost looks like you burned them trying something then flushed it and kept it over watered. All your leaves are sagging and in some spots if looks like you may even have a spider mite or Thrip issue. I can see the white spots on your leaves. That is not from any nutrient issue. Unless it is just from camera or something..
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MIcros are locked out above 6.5 macros are locked out below that. Also take into account all the salt buildup that may be present, since he is in soil. that only can screw things up more down the road. (lets clear up that this is soil we are talking about) (Also to clear up any confusion, Im not the poster, so these arn't my plants, Therefore my ego is straight and in line, as im not going to get bothered by something as little as an internet arguement) Where did you see these white dots? i screenshot'd them and zoomed and didnt find what you claim, i am 99% positive he DOES NOT have spider mites, look closely you can see blotches of brownish-yellowish necrotic spots around the sides of the leaves and it started at the tips. veins are still green with some slight yellowish hue. Im not trying to start a post war here but i just dont agree with you, your entitled to your opinion so i will be glad to discuss it with you. i personally think it is a nute problem, seen many plants similar to this. fucked up nutrients will slow or even stop your plant growth. I hope he gets it fiqured out as all us growers are a community and should be trying to help each other. not banter over stupid shit.
 
MrClone

MrClone

Active Member
CriticalCheeze said:
MIcros are locked out above 6.5 macros are locked out below that. Also take into account all the salt buildup that may be present, since he is in soil. that only can screw things up more down the road. (lets clear up that this is soil we are talking about) (Also to clear up any confusion, Im not the poster, so these arn't my plants, Therefore my ego is straight and in line, as im not going to get bothered by something as little as an internet arguement) Where did you see these white dots? i screenshot'd them and zoomed and didnt find what you claim, i am 99% positive he DOES NOT have spider mites, look closely you can see blotches of brownish-yellowish necrotic spots around the sides of the leaves and it started at the tips. veins are still green with some slight yellowish hue. Im not trying to start a post war here but i just dont agree with you, your entitled to your opinion so i will be glad to discuss it with you. i personally think it is a nute problem, seen many plants similar to this. fucked up nutrients will slow or even stop your plant growth. I hope he gets it fiqured out as all us growers are a community and should be trying to help each other. not banter over stupid shit.
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First I want to apologize for coming off like a jerk. Maybe I should pay attention and that wouldn't happen. I did however see the white dots and will try to zoom in.. I started off on a bad note today from a customer lying to me over what he was really using and he killed his plant. So I kind of vented that on this thread. It was not cool and I shouldn't have said that.. Here are the pics and spots I was talking about though.. I also understand that Macros are locked below 6.5 but I do not see any signs of that on this plant.. What this really looks like to me is root rot. I had a patient have this before and it looked very similar. .I solved it by having him get some K-L-N from Dyna-gro Mixed with 70 degree water that was run in a bucket with an air stone for about 6 hours to get enough dissolved oxygen in the water to benefit it. Depending on the soil, it may have compacted around some water and caused the issue as this can happen with Coco sometimes.. N-P-K, Sulphur, Calcium and Magnesium deficiencies will have signs and are progression deficiencies which will show differently over the progression of the deficiency. Root rot or Pythium will do to a plant exactly what this one is doing.. Hope this helps and I am sorry again.
 

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T

THE KONASSURE

Well-Known Member
check your airflow

check for bugs

looks like a lot of large plants that have filled out the area.... I`d give them a bit more space too
 
MrClone

MrClone

Active Member
ChenBentz said:
My plants have just stopped growing (about 4 weeks ago), and I need to troubleshoot to find out why.

The plants are green, healthy-looking, not drooping, no nutrient burn, etc.

Off the top of my head:

1.) Light. 18/6 1000w (40cm away)
2.) Heat. 27-32C (AC Cooltube)
3.) Medium. Soil (with a bit of coco)
4.) Humidity. 40-60%.
5.) Nutrients. H&G Soil @ 1.2EC w/tap water
6.) pH. ~6.5 (sometimes a bit higher)
7.) Bugs. Slight case of fungus gnats

So, after all that I'm pretty much stumped.

Anyone have any ideas why plants with these exact conditions would just stop growing?
Click to expand...
Looking like root rot to me
 
CriticalCheeze

CriticalCheeze

Well-Known Member
MrClone said:
First I want to apologize for coming off like a jerk. Maybe I should pay attention and that wouldn't happen. I did however see the white dots and will try to zoom in.. I started off on a bad note today from a customer lying to me over what he was really using and he killed his plant. So I kind of vented that on this thread. It was not cool and I shouldn't have said that.. Here are the pics and spots I was talking about though.. I also understand that Macros are locked below 6.5 but I do not see any signs of that on this plant.. What this really looks like to me is root rot. I had a patient have this before and it looked very similar. .I solved it by having him get some K-L-N from Dyna-gro Mixed with 70 degree water that was run in a bucket with an air stone for about 6 hours to get enough dissolved oxygen in the water to benefit it. Depending on the soil, it may have compacted around some water and caused the issue as this can happen with Coco sometimes.. N-P-K, Sulphur, Calcium and Magnesium deficiencies will have signs and are progression deficiencies which will show differently over the progression of the deficiency. Root rot or Pythium will do to a plant exactly what this one is doing.. Hope this helps and I am sorry again.
Click to expand...


Water under the bridge bud, all good. I totally understand the frustration lies can create. Especially when it is a customer. After looking at the spots you mentioned, i do indeed see said spots. So i appologize for sort of saying you were wrong, you were not. Sometimes one small symptom will change the issue from one side of the scale to the other. So the roots get bound up within the coco and just cant access enough oxygen? Basically getting downed in the process? Again, no worries, we all get stressed sometimes.
 
MrClone

MrClone

Active Member
CriticalCheeze said:
Water under the bridge bud, all good. I totally understand the frustration lies can create. Especially when it is a customer. After looking at the spots you mentioned, i do indeed see said spots. So i appologize for sort of saying you were wrong, you were not. Sometimes one small symptom will change the issue from one side of the scale to the other. So the roots get bound up within the coco and just cant access enough oxygen? Basically getting downed in the process? Again, no worries, we all get stressed sometimes.
Click to expand...

Not a problem was my bad to begin with and the spots were almost impossible to see I saw them by chance.. I am not sure if the root thing happens as you said.. I have just researched before and found something that said it is possible although not likely that some soils can compact around a small water pocket and not let it drain out. Like when soil get so packed it won't let water soak in I guess. I have never really experienced it honestly. Is one reason I use Yucca in my feeds sometimes. I have had soil so compacted water would not penetrate when I used to use Fox Farms. But never had the reverse..
 
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