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Thread: 5 weeks into flower,brown spots and leaves yellowing but only in the middle section

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    Exclamation 5 weeks into flower,brown spots and leaves yellowing but only in the middle section

    Hi all I need a little advice on what is going on with my plant,, it's 5 weeks into flower on the 27th NOV..there is brown spots mainly on the lower half of the plant with a few scattered across the top leaves and also in the middle of the plant the biggest fan leaves have gone yellow but nowhere else has... I'm growing in canna terra pro, using biobizz grow and bloom, light is a 250w cfl, I feed every 5-7 days usually when the plant begins drooping don't know wether that's a bad thing to do but heard it's good to let them have a dry period before feeding again??. Ive just purchased biobizz fish mix because I read somewhere that if using biobizz G+B I will get deficiencies and fish mix is supposed to help...

    the feeds have been like this:

    28/10 - 2.5L plain water.
    6/11 * - 2.5L 1ml grow/1ml bloom.
    13/11 - 2.5L 1ml grow/2ml bloom.
    22/11 - * 3L *1ml grow/3ml bloom.


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  2. #2

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    hi it says the pics are an invalid link so wont show them,will try again later,good luck.
    Quote Originally Posted by RollPokeToke View Post
    Hi all I need a little advice on what is going on with my plant,, it's 5 weeks into flower on the 27th NOV..there is brown spots mainly on the lower half of the plant with a few scattered across the top leaves and also in the middle of the plant the biggest fan leaves have gone yellow but nowhere else has... I'm growing in canna terra pro, using biobizz grow and bloom, light is a 250w cfl, I feed every 5-7 days usually when the plant begins drooping don't know wether that's a bad thing to do but heard it's good to let them have a dry period before feeding again??. Ive just purchased biobizz fish mix because I read somewhere that if using biobizz G+B I will get deficiencies and fish mix is supposed to help...

    the feeds have been like this:

    28/10 - 2.5L plain water.
    6/11 * - 2.5L 1ml grow/1ml bloom.
    13/11 - 2.5L 1ml grow/2ml bloom.
    22/11 - * 3L *1ml grow/3ml bloom.


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  3. #3

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    Ello m8

    I'm sure you need to feed grow at 1ml per litre.....eg:.2.5ltrs of water= 2.5 ml of grow.
    I use bio bizz and most of my girls end up looking a bit worse for wear at 5 weeks
    Get some pics up.......

    Good luck

    R.e.k.

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    Here's the first 5 pics will post rest on another post
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    I personally wouldn't be letting them dry till they wilt mate that doesn't sound very good at all , I feed daily .
    Looks to me like a magnesium deficiency .
    There's a sticky in the infermary showing all deficiency s , and there's a chart on ph lock outs for different nutes .
    What's your ph at ??

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    Quote Originally Posted by red eye knight View Post
    Ello m8

    I'm sure you need to feed grow at 1ml per litre.....eg:.2.5ltrs of water= 2.5 ml of grow.
    I use bio bizz and most of my girls end up looking a bit worse for wear at 5 weeks
    Get some pics up.......

    Good luck

    R.e.k.
    Your spot on mate,, I feel a right prat now can't believe I didn't realise that I was doing that, I have even got it wrote down to do 1ml per litre,, also where I found that info the guy also suggests that when the pistils start turning brown to use 2ml grow per L and 1ml bloom till chop.. is that ideal? This is my first grow so still learning thanks

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    Quote Originally Posted by Dr plough View Post
    I personally wouldn't be letting them dry till they wilt mate that doesn't sound very good at all , I feed daily .
    Looks to me like a magnesium deficiency .
    There's a sticky in the infermary showing all deficiency s , and there's a chart on ph lock outs for different nutes .
    What's your ph at ??
    I'll bare that in mind mate I wasn't to sure but have seen a lot of people say you should let the soil dry completely before watering.. and I don't test ph as growing in soil.

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    Quote Originally Posted by RollPokeToke View Post
    I'll bare that in mind mate I wasn't to sure but have seen a lot of people say you should let the soil dry completely before watering.. and I don't test ph as growing in soil.
    Glad you got it sorted mate .

  10. The Following User Says Thank You to Dr Plough For This Useful Post:

    RollPokeToke (26-11-13)

  11. #10
    trumptummy Guest

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    That's a long time between watering/feeding mate. I am having to water my pakistan ryder pretty much every day, granted that is in a felt pot under a 600 hps, but still.. they do drink a lot in flower. She looks hungry too to me. You should be able to rule out pH issues as it's in cannabis specific soil. 1m/L isn't very much. I don't bother with any grow nutrients when in flower as some strains can react unfavourably to too much nitrogen in flower, resulting in stunting or worse. I think I remember GB saying that Think Different from DP for example flowering can be slowed/stunted by a good couple of weeks with too much nitrogen present. I would try giving her a big drink with 2-3ml/L of bloom nutes and see how she reacts.

  12. The Following User Says Thank You to trumptummy For This Useful Post:

    RollPokeToke (26-11-13)

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