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    AllDay
    Nov 19, 2019

    Yellow Leaves

    in Grow Community

    Doing research I thought I learned that yellowing leaves means nutrient deficiencies. A couple weeks ago I had several yellow leaves & come can find out my partner was still using the veg formula into flowering. We made the adjustment & we still have yellow leaves. What do we need to do?


    We feed, feed, water, feed, feed, water. Could this have something to do with the problem?






    16 comments
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    D K
    Nov 19, 2019

    Looks like it needs some magnesium. Do you give it calmag? I would check your soil pH and PPM also by doing a slurry test and report back your numbers.

    AllDay
    Nov 19, 2019

    @D K I actually don’t give it calmag. Read somewhere you don’t need it in soil… Was that inaccurate? I don’t have a ppm meter but can get one.

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    Mr. Grow It
    Nov 20, 2019

    @AllDay Yes, cannabis needs both calcium and magnesium. Most base nutrients don't seem to have enough in it. @D K gives some good advice there to check the pH and PPM as well.

    0
    D K
    Nov 19, 2019

    Cannabis loves calcium and magnesium. I would pick some up and give it a try to see if things improve. If you have some plain Epsom salt on you, give that a try with your next feeding at a TBL per gallon, but definitely get a ppm and pH meter to keep an eye on your numbers. All plants have different needs.

    AllDay
    Nov 20, 2019

    @D K How much Calmag should I use & just mix it in water?