Black stuff on my plant

Discussion in 'Newbie Central' started by crayc, Mar 19, 2011.

  1.  
    crayc

    crayc Active Member

    Everyday i find something else. Thanks to every one who has been helpful. Found these black spot thingies on the leafs and stem. Is this the thrips feces? what could it be

    Also is this a spider mite? on 2nd pic thanks again spidermite.jpg blackstuff.jpg
  2.  
    crayc

    crayc Active Member

    2 more pics under the leaves.. wtf is this shit lol. can't be soil kicking up. the leaves look healthy right, except for that small black blotch on the upper left corner. I sprayed neem oil and safe 3 in 1 garden spray. monday will spray soapy water on her
    blackspots3.jpg blackspots2.jpg [​IMG]
  3.  
    djburns1

    djburns1 Active Member

    could be several things. I first recommend looking at it through a jewelers loupe (30X magnifyer) to see what it may be. If it is an infestation I would spray top and bottom of leaves with a spinosad product and start a systemic treatment with Azamax for 4 weeks. And remember that just a few thrips or mites should be considered an emergency and immediately treated as a major infestation. Good luck!
  4.  
    Montana Geezer

    Montana Geezer Member

    You're spraying probably knocked them back. Give it a few days and check with your microscope to see if any of the little darlings are still alive. If it's spider mites, you'll need to spray every few days. Watch your new growth.
  5.  
    crayc

    crayc Active Member

    thanks, how the heck they get on the roof. Must have strong smell, by the way the leaf with that spidermite is in the yard on a plantain plant. That is why my plant is on the roof. I did see a small web on my mj plant, but there is a huge spider on the the satelite dish near by. a garden orb spider. Maybe he shitted on my plant lol. Does my plant look healthy? I will spray again monday. When do i stop spraying? i don't know when will she start giving me bud, i guess she is flowering now.
  6.  
    crayc

    crayc Active Member

    can some one actually indentify it as thrip shit, looks very big to be that
  7.  
    Carl Spackler

    Carl Spackler Well-Known Member

    Pics could be better buy looks like either mealybugs (in the scale family) or lace bugs. No need to go crazy with a lot of systemics in either case. Neem oil and soaps should offer good control. Like another poster suggested it is extremely important to spray the underneath side of the leaves as this is were most foliar feeding insects make their home. It hides them from predators, strong sunlight and prevents them from being knocked off of the leaves by heavy rainfall. If you decide to treat again, turn your spray nozzle up side down to thorougly coat these little guys. Check again in a few weeks as most contact-type insectides have a short residual and some insects have larvae that take several days to emerge.
  8.  
    Brick Top

    Brick Top New Member

    For as many black specs as there are, that you are wondering if it could be thrip poop, you would have to have a fair number of thrips and your leaves should be showing considerable damage because of it. Something like in the picture below.


    [​IMG]


    I didn't see that in your pictures and if you are not seeing it then I would say it's not thrips.


    The possibility of it being scale was mentioned but you would normally see something like the picture below if it were scale.



    [​IMG]


    [​IMG]


    While I doubt it is the case you might have the beginnings of a case of sooty mold going on. Like I said I doubt it is the case but if it is, the problem with this type of fungi is that it attracts several types of sucking insects,like Aphids, Mealy Bugs, Thrips, and White-flies that spread the mold by walking over it and then walking around or flying to and landing on other areas of the plant(s).Eventually the mold spreads so much that it covers much or all the plant(s) and being so dark it affects the plant by inhibiting the light from reaching its leaves which stops photosynthesis, which eventually kills the plant.

    That's a long-shot though in my opinion. It is a possibility but likely one of low probability.
  9.  
    crayc

    crayc Active Member

    just googled those lacebugs and thats how it looks, dont find any bugs under the leaves however. I think i found a spidermite under one. has a web on leaf. I found one of the leaves chewed on. there are no other vegetation up there with my plant. can i spray every day?
  10.  
    crayc

    crayc Active Member

    bastard ate my leaf, anywho i just sprayed with neem oil and soap mixture. A whole bunch of tiny insects flew away. I saw one up close too small to take picture. I think it is a thrip, he was smaller than a ant. Blackish grey in color, so i will spray the plant daily. iwill make a garlic, onion and pepper spray and spray both of those daily. UGH
    leafcut.jpg
  11.  
    NightbirdX

    NightbirdX Well-Known Member

    You can mist every day with water, but I would only do neem oil every 3-5 days.
  12.  
    crayc

    crayc Active Member

    thanks, i was about to spray the shit out of them everyday lol. Maybe the garlic spray is safe to use everyday. I am going to put hydro peroxide in the soil. She about to start producing buds, need to do anything i can right now to get rids of whatever i have.
  13.  
    Brick Top

    Brick Top New Member

    .


    It's highly possible they were fungus gnats but they will eat the hairs on roots and the organic material in soil, robbing plants of nutrients, before munching the plants themselves so I doubt whatever munched your leaf were fungus gnats. If they got to the point to do that your plants would almost certainly be in pretty bad shape by now due to root damage.

    When it comes to thrips some may have wings and some may not. Adults have wings but do not fly well, they tend to jump more than actually fly so if there was a lot of flying going on that seems less likely to be thrips than fungus gnats.
  14.  
    Carl Spackler

    Carl Spackler Well-Known Member

  15.  
    crayc

    crayc Active Member

    Might actually be a combination of things, when i lanted i notice these light green things walking in the soil, just like how they are doing right now to my 2nd plant. these guys jumps like you said. thats the picture of it, which some said was a thrip, i left it there on the first plant didn't know what it was. thing they died out in the sun did not see them any more. Maybe i was wrong, maybe they still in there. yesterday found a spider web on top f the leaf, so i know that is a spidermite. Now we have some flies flying out that could have been gnats ugh. My plants are in plant hell. no beneficial insects here, i can't order them since they don't ship to this island. I am going to put plants that repel those bugs near it. see if that does any good. Spray every other day. don't think its those mealy bugs, i don't see those. insect.jpg





    mage.
  16.  
    Brick Top

    Brick Top New Member

    [​IMG]


    Are there black mealybugs too? What he has seems to be black.







    [​IMG]

    It could be lace bugs, depending on the type though since some are not black and what he has appeared to be black.


    [​IMG][​IMG]
  17.  
    crayc

    crayc Active Member

    It has been raining everyday, waiting for it to stop let it dry up so i can throw hydro peroxide on it. just throw a cap full on top might do the trick
  18.  
    Brick Top

    Brick Top New Member


    If it is a type of scale insect there are any number of home remedies people use for houseplants that would work on cannabis plants and be safe. Here's one.

    Homemade Control of Plant Scale

    Many people prefer to use homemade control of plant scale. Insecticidal soap is a safe and effective alternative to conventional insecticides. You can bleach free dishwashing liquid (1 1/2 teaspoons per one quart of water) in place of commercial insecticide soaps. Homemade control of plant scale can also be achieved with oil spray. Mix two tablespoons of cooking oil and two tablespoons of baby shampoo in one gallon of water. (Neem oil could of course also be used.) This can also be mixed with one cup of alcohol to help penetrate the insect’s shell.
    If a fungus is also present, add two tablespoons of baking soda. Test the spray on a small area of the plant, beforehand and wait 2-3 days, to check for damage. Do not spray plants in the sun or on hairy or waxy-leaved plants. Shake well before and during application. Spray every 5-7 days as needed, covering both sides of the foliage. Wash the leaves individually with the soap/oil mixture and rinse well.
    Other ways are:

    The waxy layer that is on scales protects them from insects and other pesticides. In order to get rid of them Use a horticultural oil to kill the adult populations throughout the year. If you can combine the oil with the insecticide, such as, Orthene, Sevin, or malathion it can almost wipe out the scale population along with the sooty mold it causes!Neem soil works very well too!

    You can do a few things.. more if your not nearing the end of harvest..

    1) take a pack of chewing tobacco, mix it with a gallon of water, let it brew for a day.. spray the plants down as needed.. if your a cigarette smoker no worries spray em down till harvest.. watch for mold..

    2) take some safers natural soap, mix it with some water so its a soapy slippery mixture, soak em down.. the idea is to suffocate the bugs in the soapy bubbles..
    crayc likes this.
  19.  
    crayc

    crayc Active Member

    thanks, i been using neem oil mixed with dishwashing soap. I read right now on another site that neem oil only last about 4-8 hours in a spray bottle. So i would have to put a small amount for the day. I am also going to make a garlic onion and pepper spray. I just found more spiderwebs on the bottom
  20.  
    crayc

    crayc Active Member

    there is fly always near my plant. i don't know if its a hover fly. looks kind of like it. he is always flying around

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