Dying leaves

Discussion in 'Marijuana Plant Problems' started by scorp77, Jun 14, 2018.


    scorp77 New Member

    Hello everyone! I'm hoping someone can help me out. One of my girls started to develop brown spots on some of her fan leaves - over the past week or so around 5 leaves have gotten the spots, which grow bigger until the leaf dies. Otherwise, she looks good for the most part. I have her growing in Fox Farm Ocean Forest, and haven't given her any nutrients yet. I checked the pH of the runoff with litmus paper and it looked to be somewhere in the range of 6.5-7.0. Does anyone have any idea what she may need? IMG_3572.jpg IMG_3571.jpg [ IMG_3570.jpg IMG_3568.jpg

    hotrodharley Well-Known Member

    They're starving. Feed and include cal mag in every feeding for a while at least.

    hotrodharley Well-Known Member

    The leaves curling up? Praying for magnesium. Spots are calcium deficiency. Easy on the nitrogen at first because it's just starting to show.
    Indacouch likes this.

    Indacouch Well-Known Member

    I actually switched from fox Farms because of mag issues. I never had issues until they opened their second plant. Which is where my soil started coming from. I used it for years and decided to switch to the RO 707. So like hot rod mentioned above. Start giving them some N at low rates as well as some cal/mag. The problem will only get worse if you don't correct it now. They look healthy otherwise.


    scorp77 New Member

    Great! Thanks for the quick replies. For supplementing the extra calcium and magnesium, would you guys recommend the Botanicare Cal-Mag Plus?

    Beachwalker Well-Known Member

    Yes big plant so time to feed..! Also I would add some Epsom salt for magnesium, or Cal/mag as mentioned above, I use Calimagic from GH

    Miyagismokes Well-Known Member

    I've been having mag issues with ff too, but I attributed it to using last year's dirt that sat out all winter....

    Indacouch Well-Known Member

    So I used FFOF for many many years. I never had issue and was always happy. Well up until about the last 4 or 5 seasons I started having these same issues as OP...My grows were always smooth and I started trying to figure out WTF was going on. I have green houses. Some get fed with well water and others get city water. Long story short I was chasing this problem around. Only to find out lots of fellow growers in my area were having the same issue. Even a few on here. As soon as I tested using some 707 instead the problem was cured. I personally think quality control went to shit with FF. I also believe the new plant they opened uses slightly different types of material in their batches do to location.There is an article about it. I'll have to see if I can find it.

    I have a bucket full of giant pieces of bark,trash, and rocks the size of golf balls I've picked out of ffof soil.... FF use to never pull shit like that.

    scorp77 New Member

    I stopped by my hydro shop today and picked up the Bontanicare Mag-Cal. It has 2% nitrogen. Would you guys recommend feeding just the Mag-Cal to start off with, or should I supplement with other notes as well?? My other fertilizer is the FoxFarm Grow Big (6-4-4), which I'm sure will be too much nitrogen if I use that and the Mag-Cal..

    Bernie420 Well-Known Member

    Need to start the gow big and if you want use the calmag at 1/4 strength, pick off the old effected leaves cuz there shot. Get a microbe product to add at 1/4-1/2 recommended dose once a week.


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