Dramatically losing leaves at flowering stage.Advices are needed.

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aldrick

Member
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As the images shows,after about 4 weeks of flowering stage,my plants are dramatically losing leaves on lower part of the stem.They became yellowish and dropped layer by layer.It seems only small leaves around the flower survive.As as result,almost every big leaf dropped and the plants appear a bit bald especially on its lower part.Is it normal?How to deal with this issue?
P.S. These plant have suffered spider mites for about 1 month and then recovered.I'm not sure if it is relevant.


Thank you very much!
 
R

Randm

Active Member
check the roots, are they a nice healthy whitish or a very light brown? or are they a brownish color? You may have a root fungas or 'root rot'. If so a h2o2 flushing may be the cure. I had similiar symptoms a while back and didn't diagnose the problem soon enough and lost an entire crop. You can get a 29% h2o2 solution from any hydro sore. I mix it at a rate of 3 ml. per gal and flush the heck out of the soil with it. It does kill the other benificial micro-organisms as well so it is best followed up with a worm casting tea to re-introduce those good bacteria to the soil after the soil dries out from the flushing.

Also, if you treated for spider mites as you indicated, you may have overdid it with the spray. A good idea is to give the plants a good spray with plain water to wash the dead mites and chemicals off the leaves.

One other thing you might look at: have you noticed any moths flying around your plants? If so you may have tiny little catapillars or inch worm looking buggers that are eating your plants. Hydro stores have a product that kills them as well, BT I think its called ( I use it on my outdoor plants, 100% organic and kills them dead) they also hide in the soil when its 'lights on' and come out at night. ( I have seen them during the day as well)

I'm sure there are other things to look at to diagnose your problem, but thats where I would start.
 
Friendly Caregiver

Friendly Caregiver

Well-Known Member
Randm said:
check the roots, are they a nice healthy whitish or a very light brown? or are they a brownish color? You may have a root fungas or 'root rot'. If so a h2o2 flushing may be the cure. I had similiar symptoms a while back and didn't diagnose the problem soon enough and lost an entire crop. You can get a 29% h2o2 solution from any hydro sore. I mix it at a rate of 3 ml. per gal and flush the heck out of the soil with it. It does kill the other benificial micro-organisms as well so it is best followed up with a worm casting tea to re-introduce those good bacteria to the soil after the soil dries out from the flushing.

Also, if you treated for spider mites as you indicated, you may have overdid it with the spray. A good idea is to give the plants a good spray with plain water to wash the dead mites and chemicals off the leaves.

One other thing you might look at: have you noticed any moths flying around your plants? If so you may have tiny little catapillars or inch worm looking buggers that are eating your plants. Hydro stores have a product that kills them as well, BT I think its called ( I use it on my outdoor plants, 100% organic and kills them dead) they also hide in the soil when its 'lights on' and come out at night. ( I have seen them during the day as well)

I'm sure there are other things to look at to diagnose your problem, but thats where I would start.
Click to expand...

You have made some great suggestions, but you pointed him in all the wrong directions. I love that people assume the most generic problems as soon as they see something wrong, and then take the wrong steps and make it even worse. It is not bugs, it is just potassium deficiency. It's very common in plants like pea plants that need it the most, but when you don't have it in your cannabis plants diet, leaves will literally fall right off. Just up your PK boost, like you should have starting week 3.
 
A

aldrick

Member
Randm said:
check the roots, are they a nice healthy whitish or a very light brown? or are they a brownish color? You may have a root fungas or 'root rot'. If so a h2o2 flushing may be the cure. I had similiar symptoms a while back and didn't diagnose the problem soon enough and lost an entire crop. You can get a 29% h2o2 solution from any hydro sore. I mix it at a rate of 3 ml. per gal and flush the heck out of the soil with it. It does kill the other benificial micro-organisms as well so it is best followed up with a worm casting tea to re-introduce those good bacteria to the soil after the soil dries out from the flushing.

Also, if you treated for spider mites as you indicated, you may have overdid it with the spray. A good idea is to give the plants a good spray with plain water to wash the dead mites and chemicals off the leaves.

One other thing you might look at: have you noticed any moths flying around your plants? If so you may have tiny little catapillars or inch worm looking buggers that are eating your plants. Hydro stores have a product that kills them as well, BT I think its called ( I use it on my outdoor plants, 100% organic and kills them dead) they also hide in the soil when its 'lights on' and come out at night. ( I have seen them during the day as well)

I'm sure there are other things to look at to diagnose your problem, but thats where I would start.
Click to expand...

Thank you Randm,I will look into this.
 
A

aldrick

Member
Friendly Caregiver said:
You have made some great suggestions, but you pointed him in all the wrong directions. I love that people assume the most generic problems as soon as they see something wrong, and then take the wrong steps and make it even worse. It is not bugs, it is just potassium deficiency. It's very common in plants like pea plants that need it the most, but when you don't have it in your cannabis plants diet, leaves will literally fall right off. Just up your PK boost, like you should have starting week 3.
Click to expand...
Very precious advice,I will boost the fert.But as you say it's P deficiency,why boost P n K both?And what about N?Thank you!
 
R

Randm

Active Member
I'm jut saying, it would pay to check out ALL possible causes instead of just assuming a deficiancy and treating for that. I'm not saying that those things I mentioned are definately the cause, just possibilities. When I had a root fungas, I had no idea that thats what I had, so I spent too much time treating for possible deficiancies, as a result, all plants where stressed past the point of keeping them going.
Symptoms of root rot is primarilly leaves and growth dieing from the base uppward and eventually the top dieing. Is it not an easy thing to check? Takes 5 minutes to do and it will either confirm or eliminate that as a source of the problem.
Thos elittle inch wormy bugs also attack from the bottom to the top, munching away at the smaller growth on the bottom and working their way up. Also a quick and easy check to eliminate that as a problem.

Most deficiancies, when treating for them, take several days, if not a week or more, to see improvement. A lot of damage can occur while waiting to see if your nute deficiancy is the problem. I'm not saying you are wrong at all, you may have hit the nail square on the head, but do not ignore what could be an easily checked and treated problem while waiting to see if adding potassiam works.

Too many have had plants die ( me as well ) because they don't check all the possibles and treat for what could just be a side effect of another more worriesome problem that is the real cause. Root problems often manifest themselves as nute deficiancies or lockouts because the roots are no longer able to transport the needed nutiants to the leaves and the rest of the plant. Leaves start dieing and everybody screams deficiancy ( which it may well be ) without doing a complete check on roots, ph, ventilation, bugs, temps, etc. etc..
 
S

scrotiemcboogerballs

Member
oh man, those plants look sickly and near death. there are many charts online, and on this site, that help you diagnose nutrient issues. reference that and start to fix asap. I think you are not going to get much if anything from those. good luck on the fix
 
Daemonn789

Daemonn789

Active Member
I would go get some good fertilizer for bloom and just start feeding the fuck out of them. Hopefully they will fatten up and you'll have something worth harvesting. Otherwise, if you can't get fertilizer, I would start over now. Save the lost time and just make sure I'm ready for flower next time. Google "Subcool supersoil" to get a better idea on making a soil to last all through flowering.
 
A

aldrick

Member
Daemonn789 said:
I would go get some good fertilizer for bloom and just start feeding the fuck out of them. Hopefully they will fatten up and you'll have something worth harvesting. Otherwise, if you can't get fertilizer, I would start over now. Save the lost time and just make sure I'm ready for flower next time. Google "Subcool supersoil" to get a better idea on making a soil to last all through flowering.
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oh,so serious?alright,i will start out for salvation right now...thank you man
 
A

aldrick

Member
A very late update,so late that my original sick-plant photos already seemed to be removed or what.Its been two years.And the harvest from this grow is still stocked in a bottle.Maybe they don't have the best taste(as the seeds would not be the best ones cuz I only picked them out of some low-quality fertilized weeds from some low-level venders on the street of Beijing),but the process is fun.You guys are avid helpers ,thanks a lot,and I will try to express some good seeds from abroad and grow some good stuffs once I have time and place as well as moods.Will be back here,when that day comes.
 
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