Does anyone know what these brown spots are?

[ssulaiman]

Hello everyone,
Does anyone have an idea what this may be?
I do have some nuteburn but i find it hard to believe that this is te same

 

[Deadstill]

Helpful charts for making cannabis nutrient deficiency diagnoses

I think I may as well just post these here charts up in their very own thread and then put that in my sig line, because I spend a lot of time posting these charts that I use regularly to help me make diagnoses on all my plants, cannabis included. One is specific to cannabis, the others...

www.thcfarmer.com

This thread might help ya^^^ Be sure to flip through the whole thread, there's a TON of helpful charts in there.

 

[ssulaiman]

I'd like to add this picture because i find this leave discoloration really weird and cant find anything about it

 

[ssulaiman]

Helpful charts for making cannabis nutrient deficiency diagnoses

I think I may as well just post these here charts up in their very own thread and then put that in my sig line, because I spend a lot of time posting these charts that I use regularly to help me make diagnoses on all my plants, cannabis included. One is specific to cannabis, the others...

www.thcfarmer.com

This thread might help ya^^^ Be sure to flip through the whole thread, there's a TON of helpful charts in there.

Thanks for the thread, it is really helpful indeed, yet I can't find anything about the pictures i just posted

 

[Heywood]

Maybe Potassium deficiency? Looks a lot like this...

That picture is from this link:

How To Fix Cannabis Potassium Deficiency (K) Photos & Chart

Potassium Deficiency Is One Of The Most Common Marijuana Problems, It's Symptoms Appear When The Plant Begins Flowering. Learn How It Looks And How To Fix It.

drcannabis.io

 

[Coatesygrow1]

Its dieing :)

 

[Deadstill]

Please provide us with as much info about the plants as possible so we can better help you diagnose the problem..

Soil/soilless/hydro?
pH and PPM of food/water?
Temp and relative humidity?
Types of nutes used?
Light type, distance from plant?
Watering/feeding schedule?
Any other information that may be pertinent to the situation?

Possible root issues causing lockout of potassium is my first guess. Pretty common if you have root rot issues. Might need to let the soil dry out a little better between watering/feeding, if in fact you are using soil...

 

[ssulaiman]

Please provide us with as much info about the plants as possible so we can better help you diagnose the problem..

Soil/soilless/hydro?
pH and PPM of food/water?
Temp and relative humidity?
Types of nutes used?
Light type, distance from plant?
Watering/feeding schedule?
Any other information that may be pertinent to the situation?

Possible root issues causing lockout of potassium is my first guess. Pretty common if you have root rot issues. Might need to let the soil dry out a little better between watering/feeding, if in fact you are using soil...

Im growing in soil from biobizz, i ph my feed and water 6,5 and 300 ppm with each feed. Its my first grow so i dont have a dialed in feeding shedule because I sometimes don't know what my plant wants. I feed after 2 normal waterings, i use grow nutes from easygrow (ordered at RoyalQueenseeds) and i use some other nutes from biobizz (calmag, micronutes, rootjuice and ph up/down)
My temp fluctuates between 25 and 30 celsius (ive added a co2 bag) and my RH is between 45/55.
I use the spiderfarmer SE300 in a 3x3 growtent.
Also to mention I do have some aphids on one of my plants (not alot but they do keep appearing on lower leaves) to combat this i spray with neem oil once every 3 days but its still hard to get rid of them.
Also to come back to your point of the overwatering, my plants are now in 11 liter pots. And i water with 4 liters (2 per plant) i don't know if this is too much but just today i cut it down to 3 liters. I always try to let the pots dry, sometimes till the leaves start to droop(i grow in fabric pots btw)
One more thing to note, i have velcro's down to the bottom and when i zipped it open i didn't see white roots at the side. So maybe there is something with my roots.

 

[Deadstill]

Im growing in soil from biobizz, i ph my feed and water 6,5 and 300 ppm with each feed. Its my first grow so i dont have a dialed in feeding shedule because I sometimes don't know what my plant wants. I feed after 2 normal waterings, i use grow nutes from easygrow (ordered at RoyalQueenseeds) and i use some other nutes from biobizz (calmag, micronutes, rootjuice and ph up/down)
My temp fluctuates between 25 and 30 celsius (ive added a co2 bag) and my RH is between 45/55.
I use the spiderfarmer SE300 in a 3x3 growtent.
Also to mention I do have some aphids on one of my plants (not alot but they do keep appearing on lower leaves) to combat this i spray with neem oil once every 3 days but its still hard to get rid of them.
Also to come back to your point of the overwatering, my plants are now in 11 liter pots. And i water with 4 liters (2 per plant) i don't know if this is too much but just today i cut it down to 3 liters. I always try to let the pots dry, sometimes till the leaves start to droop(i grow in fabric pots btw)
One more thing to note, i have velcro's down to the bottom and when i zipped it open i didn't see white roots at the side. So maybe there is something with my roots.

Overwatering isn't necessarily too much water at once, it means watering too frequently.. I like to pick up my pots and get a feel for how heavy they are when fully watered, and then pick them up each day to check their weight - when they're super light (like less than 1/4 of the weight when fully watered) it's time to water again..

You can also stick your fingers into the top of the soil down about 2 or 3 inches (to your knuckles) and feel for moisture - if it still feels moist, give it another day. If feels dry, time to water..

Also, are you making sure to spray your Neem oil during lights OFF? You MUST spray neem just before the lights go out to allow it to dry before light hits the plant again otherwise you will get what's known as "neem burn" which looks a lot like that.

Edit to add- I just saw you said you're letting them dry out pretty well, so I'm starting to lean towards neem burn. Could have been a concentration of neem on those spots that was still a bit wet when the lights came on and it burned the leaves..

 

[ssulaiman]

Overwatering isn't necessarily too much water at once, it means watering too frequently.. I like to pick up my pots and get a feel for how heavy they are when fully watered, and then pick them up each day to check their weight - when they're super light (like less than 1/4 of the weight when fully watered) it's time to water again..

You can also stick your fingers into the top of the soil down about 2 or 3 inches (to your knuckles) and feel for moisture - if it still feels moist, give it another day. If feels dry, time to water..

Also, are you making sure to spray your Neem oil during lights OFF? You MUST spray neem just before the lights go out to allow it to dry before light hits the plant again otherwise you will get what's known as "neem burn" which looks a lot like that.

Edit to add- I just saw you said you're letting them dry out pretty well, so I'm starting to lean towards neem burn. Could have been a concentration of neem on those spots that was still a bit wet when the lights came on and it burned the leaves..

I only spray neem with lights off and i put the ventilator off for a few hours and then put it on before the lights turn on again to make sure the neem dries out a bit. But maybe it is a too high concentration, i will try to watch what happens after i spray again.
One question someone mentioned that it might be a potassium problem, in the picture there is a ingredient list of the main nutes that i use now. There is potassium in there so that cant be the problem right?

Also about the root problems what do you recommend to do, because i dont see white roots and i dont think thats a good sign. I have used mycorrhiza and sometimes put it in my water when i feed.
Also I dont have a ventilator that blows below the canopy and on the pots can that cause a lack of oxygen near the root zone?

 

[Deadstill]

There is potassium in there so that cant be the problem right?

Also about the root problems what do you recommend to do, because i dont see white roots and i dont think thats a good sign. I have used mycorrhiza and sometimes put it in my water when i feed.
Also I dont have a ventilator that blows below the canopy and on the pots can that cause a lack of oxygen near the root zone?

That's what I meant by lockout - just because it's there, doesn't mean the plant is picking it up. Usually caused by multiple factors, one of them includes root rot.

You mentioned you transplanted to bigger pots, how long ago was this? And you have a way to check the roots, but you don't see any?

 

[ssulaiman]

Sorry for all the information, i really appreciate the help..
But about the burn marks that you think couldve been the neem oil, the brown marks are only on 1 of the plants and i spray both of the plant with the neem mix.

Also the plant on the right has a weird colour but its beginning to look better again at the new growth, i also put this on a another thread but i didn't get any clear answers.

 

[ssulaiman]

That's what I meant by lockout - just because it's there, doesn't mean the plant is picking it up. Usually caused by multiple factors, one of them includes root rot.

You mentioned you transplanted to bigger pots, how long ago was this? And you have a way to check the roots, but you don't see any?

Yes i have transplanted but that was a good while ago, yes i do have a way to look at the roots. I will make a picture tomorrow

 

[Deadstill]

Sorry for all the information, i really appreciate the help..
But about the burn marks that you think couldve been the neem oil, the brown marks are only on 1 of the plants and i spray both of the plant with the neem mix.

Also the plant on the right has a weird colour but its beginning to look better again at the new growth, i also put this on a another thread but i didn't get any clear answers.

It could have been. Depending on the type (brand) of neem oil you use, how strong you mixed it, and if you're shaking your sprayer constantly while you're spraying, to keep it mixed (oil and water don't mix well so constant shaking is highly recommended)

And as far as all the info - you're good man more info you give us more help we can give you!

But looking at the side-by-side pics it's definitely looking like you may have issues in the root zone in one or two or maybe all plants

Yes i have transplanted but that was a good while ago, yes i do have a way to look at the roots. I will make a picture tomorrow

Yeah if you transplanted more than say 3 or 4 weeks ago, and you're not seeing roots at the bottom and outer edges of the pot, there's something going on. I'll wait for pics of that before I offer further advice on that issue.

 

[ssulaiman]

It could have been. Depending on the type (brand) of neem oil you use, how strong you mixed it, and if you're shaking your sprayer constantly while you're spraying, to keep it mixed (oil and water don't mix well so constant shaking is highly recommended)

And as far as all the info - you're good man more info you give us more help we can give you!

But looking at the side-by-side pics it's definitely looking like you may have issues in the root zone in one or two or maybe all plants

I used plant safe organic soap to dissolve the neem into the water, and i do shake before use. The container states that the neem oil is 100% pure

 

[ssulaiman]

It could have been. Depending on the type (brand) of neem oil you use, how strong you mixed it, and if you're shaking your sprayer constantly while you're spraying, to keep it mixed (oil and water don't mix well so constant shaking is highly recommended)

And as far as all the info - you're good man more info you give us more help we can give you!

But looking at the side-by-side pics it's definitely looking like you may have issues in the root zone in one or two or maybe all plants



Yeah if you transplanted more than say 3 or 4 weeks ago, and you're not seeing roots at the bottom and outer edges of the pot, there's something going on. I'll wait for pics of that before I offer further advice on that issue.

Here are the pictures of the inside of my pots..

 

[mysticepipedon]

If you don't see roots along the sides of the pot, you aren't watering thoroughly. Not that this would be related to that odd symptom.

Roots grow toward water. They ignore dry soil. If you don't water thoroughly, you are effectively growing in a smaller pot. When you finish watering a plant in a cloth pot, the sides of the pot should be wet.

 

[ssulaiman]

If you don't see roots along the sides of the pot, you aren't watering thoroughly. Not that this would be related to that odd symptom.

Roots grow toward water. They ignore dry soil. If you don't water thoroughly, you are effectively growing in a smaller pot. When you finish watering a plant in a cloth pot, the sides of the pot should be wet.

Okay ill try to make sure that happens, how much water does one recommend that use for every watering in 11liter pots (3 gallons)?

 

[Deadstill]

Okay ill try to make sure that happens, how much water does one recommend that use for every watering in 11liter pots (3 gallons)?

It helps if you stop looking at it like "What's the minimum amount of water I need to give them at one time?" As mysticepipedon said, what's important is to make sure you are saturating the ENTIRE pot.

One thing you could do especially since you're in fabric pots, is take something like a 5 gallon bucket or something big enough to fit those 3 gallon fabric pots in, and fill it with water, take the fabric pots and dunk them in the water. Let them sit in there for a minute or two and really soak up as much water as they can.

Or, you could put drip trays under the fabric pots and keep watering until it will literally not hold another drop of water.

The excess water that doesn't get soaked up by your fabric pot/soil, is known as "Runoff". The general rule to watering in pots is to water until you see at least 10 to 15% of what you put IN to the pot, run out the bottom. That means it's saturated and won't absorb any more.

Next, you need to SAVE that "runoff" and test it's pH. This will give you a better idea of what the pH is doing in your soil, and my bet it's off in one way or another, and a big part of what's causing your root issues.

So start there and we'll talk about additives that might help your roots after we get some results on that runoff pH

 

[ssulaiman]

It helps if you stop looking at it like "What's the minimum amount of water I need to give them at one time?" As mysticepipedon said, what's important is to make sure you are saturating the ENTIRE pot.

One thing you could do especially since you're in fabric pots, is take something like a 5 gallon bucket or something big enough to fit those 3 gallon fabric pots in, and fill it with water, take the fabric pots and dunk them in the water. Let them sit in there for a minute or two and really soak up as much water as they can.

Or, you could put drip trays under the fabric pots and keep watering until it will literally not hold another drop of water.

The excess water that doesn't get soaked up by your fabric pot/soil, is known as "Runoff". The general rule to watering in pots is to water until you see at least 10 to 15% of what you put IN to the pot, run out the bottom. That means it's saturated and won't absorb any more.

Next, you need to SAVE that "runoff" and test it's pH. This will give you a better idea of what the pH is doing in your soil, and my bet it's off in one way or another, and a big part of what's causing your root issues.

So start there and we'll talk about additives that might help your roots after we get some results on that runoff pH

My plants still have enough water in them, i think they will need a watering by this evening. So then i will send you the ph of both plants.

Also, i was thinking on flipping to flower in a bit. But i think its better to wait till things have been sorted out right?

I added some other photo's about the progress of the brown spots that are developing.