Diagnose this?....but dont tell me its nutes!

I have a nice Chocolope...shes 10 weeks from seed but has a leaf problem.. curious if anyone can confirm what it is.
Small patches of discolouration start at the leaf edge on younger leaves and distorts leaf growth. I have treated it as a fungus by first removing all affected leaves and spraying with potassium bicarbonate as a fungicide.
The plant itself is really healthy and the problem only seen on a couple of older leaves which look a bit tattered...see pic 4. But will continue to grow out as shes ready to flower. I spray regularly with fungucide which she doesnt mind. I think it looks like an anthracnose fungus (from image searches n google n research) but wondering if anyone else has seen this. Took some clones early from the plant which show similar leaf issues but they are growing & healthy. My other plants are perfectly healthy...exact same grow conditions diff strains.
Its def not nutes lol...or pH...or lights...
Anyone come across this before?

Your last picture with light tops.

Could be light burn or iron deficiency.

Those pics of your squished leaves look like physical damage from touching or pulling off a seed shell, unless your getting weird root damage or maybe russet mites starting ?

, just a guess bud.

You're pretty confident in this not being a pH issue; why do you say that? Different strains will grow and react differently to the same identical conditions, so using one strain's success as a measuring stick for another strain can be misleading. I would think if you "spray regularly with fungucide" and the issue isn't resolving itself; you're not on the right track. I would go back to my pH.

Twisted leaves often are caused by micro deficiency, often brought on by PH being off.

CannaCountry said:

You're pretty confident in this not being a pH issue; why do you say that? Different strains will grow and react differently to the same identical conditions, so using one strain's success as a measuring stick for another strain can be misleading. I would think if you "spray regularly with fungucide" and the issue isn't resolving itself; you're not on the right track. I would go back to my pH.

Click to expand...

Thanks for your reply, Very confident it is not is pH issue as only select leaves become distorted after initial spots ...they have a rust brown colour and you can see a typical fungal ring around the initial spot on some. The fungicide spray has managed spread and mostly controlled the problem as the health of the plant in the last photo is evident...a couple of older leaves show the distorted leaves that follow the appearance of the spots.
The lime coloured new growth is a normal reaction to being put into 12/12 a couple of days ago. Growth is lush.. not stunted or discoloured at all.
Growing in coir with perlite, vermicilite, and some added lime and blood n bone aged before use. Soil pH is a dandy buffered 6.5 and all my plants...diff strains also...are thriving in the mix. Rotating roster of liquid organic nutrients with watering as needed.
As a rule a deficiency will affect the plant in a systemic way will show up as a pattern. ie all growth or most new growth or older leaves etc.
Fungal Disease is usually much more random in presentation.
I doubt the weed seed used was fungicide treated as commercial seeds are so there is a potential route of infection.
Just wondering if anyone can put a name on it...

CannaCountry said:

You're pretty confident in this not being a pH issue; why do you say that? Different strains will grow and react differently to the same identical conditions, so using one strain's success as a measuring stick for another strain can be misleading. I would think if you "spray regularly with fungucide" and the issue isn't resolving itself; you're not on the right track. I would go back to my pH.

Click to expand...

if it was ph id expect more purple stems

but, dont get me wrong....

re read my post if you have to, lol.'

"just a guess"


im no soil pro, im coming from a history of hydro.


take my comment with a grain of salt.

ps. i just re looked over the photos.

i dont think you could see one stem...

hey buddy.

take some stem pictures. just for a joke

Lime in coco? I don't think I've ever heard of this. I'm also a little confused with the vermicilite? Kinda defeats the purpose of coco, doesn't it?

I too think, it's ph issues
6.5 seems high

SH420

projectinfo said:

ps. i just re looked over the photos.

i dont think you could see one stem...

hey buddy.


take some stem pictures. just for a joke

Click to expand...

Here's a stem pic....sicko....hahaha!!

shrxhky420 said:

Lime in coco? I don't think I've ever heard of this. I'm also a little confused with the vermicilite? Kinda defeats the purpose of coco, doesn't it?

I too think, it's ph issues
6.5 seems high

SH420

Click to expand...

Thanks for your input! I decided to go soiless and read up a bit on problems that folk seemed to have with coco coir.
I'm very lazy. Like to keep it simple.
My mix is coco coir 60% rinsed x 3. perlite 30% vermiculite 10% (magnesium aluminium silicate) couple of good handfuls of dolomite lime (calcium magnesium carbonate)and same of pure blood n bone (nitrogen.iron.calcium). Aged b4 use. In theory these should add enough trace elements for life of the grow and I only use a regular fish based fertiliser once a week or so. I have added soluble potash occaisonally now to boost flowering. I dont use cal/mag or bother measuring water pH. Water when light. Coir is Basically a hydro set up...but could water all day every day and they still won't drown thanks to perlite & vermiculite. Root my clones and grow seeds in this mix too.
Pic 1 problem child chocolope next to Pineapple Chunk girl..both 10 weeks just into 12/12
Pic 2 Pineapple clones 22 days...i am stingy with size of cuttings..going to try making fem seeds with these two.
Pic 3. I dont defoliate as leaves = energy
Love to learn from the forums here...
Growing tips always welcome!

If this is true:

"My mix is coco coir 60% rinsed x 3. perlite 30% vermiculite 10% (magnesium aluminium silicate) couple of good handfuls of dolomite lime (calcium magnesium carbonate)and same of pure blood n bone (nitrogen.iron.calcium). Aged b4 use. In theory these should add enough trace elements for life of the grow and I only use a regular fish based fertiliser once a week or so. I have added soluble potash occaisonally now to boost flowering. I dont use cal/mag or bother measuring water pH. Water when light."

....you're asking for problems. Your coco is inert. It's going to take on the pH of whatever you put in it...this includes the Fish Emulsion, Lime, Potash and the Blood and Bone you added. It's also going to take on the pH of your water which you've now admitted to not bothering to pH. Which is confusing since you insist the pH is right on. Anyhow, you know better than anyone else since you're sitting in front of your grow. I'd go back and revisit pH if it were me....otherwise, good luck. Let us all know how it works out.

CannaCountry said:

You're pretty confident in this not being a pH issue; why do you say that? Different strains will grow and react differently to the same identical conditions, so using one strain's success as a measuring stick for another strain can be misleading. I would think if you "spray regularly with fungucide" and the issue isn't resolving itself; you're not on the right track. I would go back to my pH.

Click to expand...

I agree with cannacountry, and while those necrotic presentations may well be septoria type issue it does not mean two problems cannot be present at once. Reconsider your pH, good luck

[QUOTE="CannaCountry, post: 14583839, member: 9


"My mix is coco coir 60% rinsed x 3. perlite 30% vermiculite 10% (magnesium aluminium silicate) couple of good handfuls of dolomite lime (calcium magnesium carbonate)and same of pure blood n bone (nitrogen.iron.calcium). Aged b4 use. In theory these should add enough trace elements for life of the grow and I only use a regular fish based fertiliser once a week or so. I have added soluble potash occaisonally now to boost flowering. I dont use cal/mag or bother measuring water pH. Water when light."

....you're asking for problems. Your coco is inert. It's going to take on the pH of whatever you put in it...this includes the Fish Emulsion, Lime, Potash and the Blood and Bone you added. It's also going to take on the pH of your water which you've now admitted to not bothering to pH. Which is confusing since you insist the pH is right on. Anyhow, you know better than anyone else since you're sitting in front of your grow. I'd go back and revisit pH if it were me....otherwise, good luck. Let us all know how it works out.[/QUOTE]
Thanks cannacountry & beachwalker , I appreciate your replies!!
I do have 40+ years gardening experience and an applied biology degree so managing pH is not a mystery to me... but this is a new plant for me and I am keen to learn from others experience ....mostly very happy plants that seem to love my work lol ...so far so good..apart from identifying the mystery fungus.
I homed in on anthracnose as the signs in my plant are identical to images of anthracnose infection in tree leaves. Right down to the distorted growth and spot appearance.

Really just wanted to confirm and seek tips on management from others who have experience with similar fungal problems.
Thanks guys!
Still keeping it simple

summerr said:

[QUOTE="CannaCountry, post: 14583839, member: 9


"My mix is coco coir 60% rinsed x 3. perlite 30% vermiculite 10% (magnesium aluminium silicate) couple of good handfuls of dolomite lime (calcium magnesium carbonate)and same of pure blood n bone (nitrogen.iron.calcium). Aged b4 use. In theory these should add enough trace elements for life of the grow and I only use a regular fish based fertiliser once a week or so. I have added soluble potash occaisonally now to boost flowering. I dont use cal/mag or bother measuring water pH. Water when light."

....you're asking for problems. Your coco is inert. It's going to take on the pH of whatever you put in it...this includes the Fish Emulsion, Lime, Potash and the Blood and Bone you added. It's also going to take on the pH of your water which you've now admitted to not bothering to pH. Which is confusing since you insist the pH is right on. Anyhow, you know better than anyone else since you're sitting in front of your grow. I'd go back and revisit pH if it were me....otherwise, good luck. Let us all know how it works out.

Click to expand...

Thanks cannacountry & beachwalker , I appreciate your replies!!
I do have 40+ years gardening experience and an applied biology degree so managing pH is not a mystery to me... but this is a new plant for me and I am keen to learn from others experience ....mostly very happy plants that seem to love my work lol ...so far so good..apart from identifying the mystery fungus.
I homed in on anthracnose as the signs in my plant are identical to images of anthracnose infection in tree leaves. Right down to the distorted growth and spot appearance.
View attachment 4232660 View attachment 4232661
Really just wanted to confirm and seek tips on management from others who have experience with similar fungal problems.
Thanks guys!
Still keeping it simple [/QUOTE]

• Spray copper fungicide, burn sulfur or the best fix is to control your environment

summerr said:

I have a nice Chocolope...shes 10 weeks from seed but has a leaf problem.. curious if anyone can confirm what it is.
Small patches of discolouration start at the leaf edge on younger leaves and distorts leaf growth. I have treated it as a fungus by first removing all affected leaves and spraying with potassium bicarbonate as a fungicide.
The plant itself is really healthy and the problem only seen on a couple of older leaves which look a bit tattered...see pic 4. But will continue to grow out as shes ready to flower. I spray regularly with fungucide which she doesnt mind. I think it looks like an anthracnose fungus (from image searches n google n research) but wondering if anyone else has seen this. Took some clones early from the plant which show similar leaf issues but they are growing & healthy. My other plants are perfectly healthy...exact same grow conditions diff strains.
Its def not nutes lol...or pH...or lights...
Anyone come across this before?

Click to expand...

thats a ph issue basically it locking out part of some of the nutes and making them wac out

rob333 said:

thats a ph issue basically it locking out part of some of the nutes and making them wac out

Click to expand...

deformed leaves are a comming issue with ph imbalance

Check your PH. What could it hurt?
Contrary to popular belief not all soil buffers PH.
And your soil mix can vary from pot to pot.
Does not look fungal to me.

drsaltzman said:

Check your PH. What could it hurt?
Contrary to popular belief not all soil buffers PH.
And your soil mix can vary from pot to pot.
Does not look fungal to me.

Click to expand...

10 years never once have i ph soil just saying

rob333 said:

10 years never once have i ph soil just saying

Click to expand...

I would say I don't usually.
Tap PH can run unusually high or low.
They swap sources here from time to time between reservoirs and wells, and the plants show it.
I've had many deformed leaves. None due to a fungus.

rob333 said:

10 years never once have i ph soil just saying

Click to expand...

This isn't soil we're discussing, coco is very different than soil. Coco needs to be ph'd. Just saying

SH420