Red Leaves / Purple Leaves

Discussion in 'Marijuana Plant Problems' started by muffin, Oct 7, 2008.

  1.  
    muffin

    muffin Well-Known Member

    Hi Guys,

    Some of the leaves on my plant are turning light green & then red or purple towards the tips.

    Have recently used phosphorus plus for the first time (5 Weeks into flowering) so could be nute burn, but the according to all the guides the above signs are of a phosphorus deficiency.

    Any ideas?
  2.  
    Seamaiden

    Seamaiden Well-Known Member

    Your plants look fine (they look good). I've got a Papaya that's got VERY purple leaf stems and she's doing fine. The yellowing is also normal, the plant is moving nitrogen to where it needs to use it (the buds). Continuing with feedings, with a little higher phosphorous during flowering, is the thing to do.
  3.  
    muffin

    muffin Well-Known Member

    Cheeers mate,

    I was tempted to feed them but over feeding
    when you have problems is a big no no according
    to posts I have read!

    Will give them so phos plus tonight...
  4.  
    muffin

    muffin Well-Known Member

    Cheeers mate,

    I was tempted to feed them but over feeding
    when you have problems is a big no no according
    to posts I have read!

    Will give them so phos plus tonight...
  5.  
    Seamaiden

    Seamaiden Well-Known Member

    Yes, overfeeding is most difficult to recover from, I should know. Rest assured, in my very humble opinion, they're looking good.
  6.  
    muffin

    muffin Well-Known Member

    Hi Guys,

    Ok, a week has past since my original post & the leaves are still effected.

    They are changing colour like the leaves on the trees outside in autumn.

    Am still putting this change down to temps.

    Have purchased a small oil filled radiator to place in my tent, the temps are now 70 Degs night & 80 Degs day but not much improvement in colour.

    Buds do not seem to be effected, just some of the leaves.

    I'm on day 49, so have 14-21 days to go...

    Hoping they will go the distance,

    Attached Files:

  7.  
    Seamaiden

    Seamaiden Well-Known Member

    How come you're not removing the yellow leaves? Other than not having them removed (which is giving yours a thicker canopy than mine), they look pretty darn close to what I'm seeing.

    What you're seeing is similar to what's starting to happen to some of my girls, all outdoors, after a cold spell that's now passed. One in particular has gone quite autumnal in her coloration, others are showing varying degrees of purple coloration, ALL have more and more yellowing leaves. At this point I have no idea how far from harvest I am, because two weeks ago I figured I had about two weeks left. Yet, no color change towards amber is really apparent. Maybe we go til the end of the month.
  8.  
    muffin

    muffin Well-Known Member

    I was always told not to remove any leaves unless the were about to fall off, so have kept them all on?

    Some of the large fan leaves on my tall plant are effected more than others so was tempted to pull them off as they are going almost limp, if only just to give more light to the buds below?

    Nov 1st will be 9 weeks, so I'm guessing so :~)

    As I said above, have been tempted to remove some of the large leaves to give more light, but always thought it was wrong to? Maybe not...
  9.  
    Seamaiden

    Seamaiden Well-Known Member

    If the leaves are no longer green, I go ahead and remove them. It looks neater, and does open up the canopy, will fall off anyway, and it pleases me. :lol: Now what I'm doing, instead of pinching or cutting off is just gently pulling them. If they give and come off, great. If not, they stay til they're spent. I think the plant is still using the nutrients held within the leaves and if removed too early will just move that demand elsewhere. Does that make sense? I can't say that your way is wrong, though, it's just different from what I do (not just with Mary, but with all plants).
  10.  
    muffin

    muffin Well-Known Member

    Not sure if I am losing it, but the larger of the three seems to by on its way out?

    I have seen leaves go yellow as the plant matures, but nothing like this.

    The buds seem to be fine at the moment, abit a tad small, but its my first grow, so happy with anything to be honest

    Attached Files:

  11.  
    muffin

    muffin Well-Known Member

    More pics...

    Think I will pull the bright red ones off?!?

    Attached Files:

  12.  
    Seamaiden

    Seamaiden Well-Known Member

    I'd leave the red, gently tug on the yellow. :) It looks like you have a tiny bit of autumn in a closet.
  13.  
    muffin

    muffin Well-Known Member

    Ha Ha... I know :~)
  14.  
    kingeric

    kingeric Active Member

    they look nearly ready how far in are you
  15.  
    muffin

    muffin Well-Known Member

    I could be a nitrogen def?

    Taken from Planet Ganja.com - Learn how to grow Marijuana...

    Usually the def will start on the lower to middle part of the plant, and then will usually happen to older leaves first. Then the deficiency will work its way up the plant. Your plant can be green on top, then yellowing on the lower leaves when the deficiency is starting out. Yield will be greatly reduced without good amounts of nitrogen in your plants. Sometimes in bad cases the leaves will turn a purplish color along with the yellowing.

    My Nuets contain Nitrogen & my water is always ph'd to around 6-6.5 so there should not be a nute lock or anything.
  16.  
    kingeric

    kingeric Active Member

    flowering plants dont need a lot of nitrogen symptons same as overfert
  17.  
    muffin

    muffin Well-Known Member

    Thanks kingeric,

    They are 51 days in, will be 9 weeks into flowering on Nov 1st, some people say they grow the church till 11 weeks though?

    The smell is still pretty fresh so don't think they are quite ready yet, there are orange hairs on the center cold, but not on all of the smaller pubs lower down the plant.
  18.  
    muffin

    muffin Well-Known Member

    Sorry, the correct version:

    The smell is still pretty fresh so don't think they are quite ready yet, there are orange hairs on the center cola, but not on all of the smaller buds lower down the plant.

    The hairs are just starting to go orange on these...
  19.  
    kingeric

    kingeric Active Member

    if 75 %of hairs are brown its ready seen church ready in 8 weeks
  20.  
    muffin

    muffin Well-Known Member

    Thats what I thought, the hairs on the main colas on all 3 are getting pretty orange, but not so on the smaller buds, so I thought 9 weeks seemed a good estimate.

    You say brown, do they go brown after they go orange?

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