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Thread: White spots

  1. #1

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    Default White spots

    I ve noticed in a few of the top leaves of one of my plants that there are some white spots. Can someone please confirm if it is a nutrient deficiency, pests or light burn? I donít think is the latter cause it is only in one of the plants. Here are the pics:



  2. #2
    Diaper Guest

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    Very difficult to see from those pictures.
    Small white spots and it's most likely a pest problem.
    Have you looked under the leaves for any signs of creepy crawlies as it doesn't sound like a nutrient thing?

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    Are the pests bellow the leaves vissible with the naked eye? Cause i cant seem to find any. Whatever it is its in my other plants now too. Problem is i ve never had pest problems and i dont know what exactly to look for. If i leave them as they are will they make it for 4/5 weeks?

  4. #4
    Diaper Guest

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    O.k don't panic!

    Like I said it's very difficult to see from those pictures, but White spots aren't really associated with nute disorders.
    White spots could indicate the presence of mites or thrips.
    I shall upload a few pics for you to check out.
    They will be visible on the underside of the leaves, but there might not be that many at this stage. The white spots are were they feed on the leaves, so look at your spots carefully, are they made up of lots of little spots?

  5. #5
    Diaper Guest

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    Spidermite speckling



    Thrip damage



    What would be really handy would be a clear shot of the spots, ie natural light.

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    First of all thx very much mate for all ur help and uploading the pics i really appreciate it. I doesnt look like mites from what i understand from your pics. Here are the clear pics:







    Thats the best i can do with the cam i have at the momment. They were going to have the first feed in 4-5 days.

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    it looks to me like you have spilled a few dropletts on the leaves and the light has intensified that area leaving wee marks on the leaves

    what light u useing m8

    apart from the wee marks they look healthy, really nice dark green foliage

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    I am using a 250watt HPS (Powerplant) and its about 20" from the plants. The tallest plant is 19" away and is the only one without any spots. I really hope it is something simple like spilling a few drops.
    Last edited by lowryder; 13-08-07 at 04:04 PM.

  9. #9
    Diaper Guest

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    No, it doesn't look like mites.
    That's a relief, believe me

    Those pics are much better, but it's still a hard call.

    Looking @ this;



    Makes me think it's a touch of nute burn from hot soil. that one leaf looks a little crisy round the edge, with a burnt tip.

    Like Lewy said they do look a nice, lush green. Maybe they don't need feeding just yet, if you do go easy on them.

    Keep us posted mate, and keep growing!

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    Thats definatelly a relief cause the mites sound very difficult to get rid off. Since it seems to be the nutes from the soil i wont feed them for at least one more week and see how it goes. Thanks very much both for putting my mind at ease.

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    Things have escalated a lot since the little white spots started to appear.

    This is one of the plants and has very pale green colour on all the older leaves and it also has some burn marks which i dont know how they got there. Does it look like some short of defficiency? Here are the pics:





    And this is the same plant as in the previous pics i posted earlier in this thread:







    Does it look like its overfert? Or some short of defficiency going on? The same signs where there before i start feeding the plants and bottom leaves were yellowing. Could someone shed some light into this please?

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    it looks like extreme over fert but i could be wrong m8

    Take it to a tap and flush the whole soil for about 20 mins then let the water drain out before you put it back into your room. Leave it to dry out for a couple of days or when the soil is dry an inch down then give it some epson salts and see if that helps man. Remember to heat the epson salts up before you add it to the mix as it works better for the plant.

    its worth a try it could be the simpliest of things m8 i would try to rule out as much as possible that way you will be able to know what is wrong with it

    I might be blabbing on a bit though m8 sorry about that had a few to many today

  13. #13
    Diaper Guest

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    Have you been feeding them? If so, what & how much?

    Have you flushed them now, as Lewy suggested?

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    Quote Originally Posted by Diaper View Post
    Have you been feeding them? If so, what & how much?

    Have you flushed them now, as Lewy suggested?
    I started feeding them when the bottom leaves started to yellow. First dose was 0.5ml/l of bio bloom and grow gave them 300ml from the mix. Second feed was 0.7ml/l and gave them 350ml. The last feed was 0.9ml of same nutes and again at 350ml. I feed them every 2-3 days they have only got 3 feeds so far. My problem is that all those signs where there before i even fed them and i dont understand how can they be overfed since the bottom leaves continue to yellow. I havent flushed them yet cause they are 3 weeks away from the chop. Should i flush them? Or just stop giving them any nutes till the end? I am so baffled with this grow.

  15. #15
    Diaper Guest

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    Do you feed BioGrow too?

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    Quote Originally Posted by Diaper View Post
    Do you feed BioGrow too?
    Yes both grow and bloom at the same amount.

  17. #17
    Diaper Guest

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    O.k, so you're hardly over doing it. Although saying that it is a small plant. I thought from your first pics that they did indeed look like they'd suffered nute burn from a hot soil mix.
    The yellowing is obviously Nitrogen def, not uncommon in late flower. But can be avoided by higher levels of grow earlier in the grow. I know people who've fed Lowryders very heavily without to many problems, so I it's quite puzzling. If they were my plants I think I'd be inclined to give them a flush with 3x the pots volume of water, and then a 1/2 strenght feed. Feed regular from then on increasing as you go. With such a short time to go I wouldn't loose to much sleep over them either. Whatever the out come you'll sure have something to be smoking very soon.

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    Thanks for your replies and help i think if i flush them now i risk getting balls due to the stress and that would be the worst. I will let them as they are and try and look for another hobby propably lol.

  19. #19
    Diaper Guest

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    I don't think you need worry about them getting balls from stress. Just give them a good watering, then bring in the feeding again. You can't loose!

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    Would it make any possitive difference in the final weight? Cause there are many things that can go wrong with too much water now root rot, bud rot, balls etc. At least now they are growing somewhat if i flush them and they get stressed they will loose a few days of growth?

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