Guide for Diagnosing Plant Problems

S

shenagen

Well-Known Member
OK here is a start of some links........
THE MARIJUANA GROWER'S GUIDE..........by Mel Frank & Ed Rosenthal
This is some of Ed Rosenthals book...good read

International Cannagraphic Magazine Forums - The Complete guide to Sick Plants,pH, and Pest troubles!
One of the better sick plant guides I've come across

Cannabis Nutrient and Deficiency Table

https://www.rollitup.org/general-marijuana-growing/1469-marijuana-plant-problems-cures.html
This one is definately in the wrong area...I was on this site for over a month before I used it.

I'll update this list as I find more usefull info
 
S

Streetsk8

Well-Known Member
Mine leaves are waving, getting yellow and brown
not spot but half the the leaves is brown
would that be Phosphorous defiency ?
if yes
where to buy phosphorous i could give to plants ?
 
S

shenagen

Well-Known Member
Give them any base fert that contains P. Thats the way most def. work....you just give em something that has what they need. There are some ferts that have different blends like 5-2-4 0-0-1..etc.
 
S

Streetsk8

Well-Known Member
No i found out what was going on in my setup !
i had no more root space..
root bound stunt ur plant so bad its gona die !
and happen to me twice.
this time i have bigger pots !
Even bigger in 2 weeks
;l)
cant wait
all my leaves are nice and green now
no more yellow , brown shit
thx all !
 
jacob123

jacob123

Active Member
my plants lacking Nitrogen and Potassium, guide really helped =D
got me some baby bio, this should take care of the problem
 
lonestarbudd

lonestarbudd

Well-Known Member
even after going thru this, flushing my system and maintaining a 5.6 or so pH in my waterfarm, my plant hasnt gotten any better... if anyone can grow hydro and is willing to help... please do!!
 
colem8

colem8

Well-Known Member
I have been growing these ice babies for 3 weeks now and have notice that the first leaves are starting to go yellow in patches, starting from the tip and slowly heading towards the centre. They seem to be drying and then cracking after that. A few of the mid leaves are getting a little spotty as well.... Im guessing that its not light burning... Is it because of over feeding at such a young stage or too much water?? Any help with this would be much appreciated! Here are some pics to help show what Ive explained. IMG_0998.JPG
 
S

shenagen

Well-Known Member
lonestarbudd said:
even after going thru this, flushing my system and maintaining a 5.6 or so pH in my waterfarm, my plant hasnt gotten any better... if anyone can grow hydro and is willing to help... please do!!
Click to expand...
You can pm me I'll try...I'm in hydro and soil. make a much more detailed list of your operation too.
 
S

shenagen

Well-Known Member
colem8 said:
I have been growing these ice babies for 3 weeks now and have notice that the first leaves are starting to go yellow in patches, starting from the tip and slowly heading towards the centre. They seem to be drying and then cracking after that. A few of the mid leaves are getting a little spotty as well.... Im guessing that its not light burning... Is it because of over feeding at such a young stage or too much water?? Any help with this would be much appreciated! Here are some pics to help show what Ive explained. View attachment 110281
Click to expand...

They look like they're over fed. If you have given ANY nutes that is probably it. You've got the yellowing starting at the tips, and it looks like the fringes are curling up a bit...which is either too hot or over ferting. Some close-ups may help
 
S

shenagen

Well-Known Member
dragonofweed said:
Any advice on the yellowing at the bottom of this plant. I'm not sure if it looks like a mangnesium deficiency, but it has me a bit concerned because of the sudden onset.
Click to expand...

It doesn't for sure look like mag def. ...but neither did mine and magical fixed it. Get some more pics. And how quick did this happen?
 
S

shenagen

Well-Known Member
Its looking like a N def. Have you read through my links that are in this thread? If not...then do...and see which fits best. The ICmag link is the best place to start then the stuff by Rosenthal
 
dragonofweed

dragonofweed

Active Member
Perhaps I've cut to far back on the N b/c the plant is a ruderalis cross and is already flowering. I just gave it a shot of nitrogen after reading your post, and I'll keep a close eye on it. Thanks for the help. I save all the yellowing leaves to make butter and it still gives a nice buzz.
 
You must log in or register to reply here.
Top