Spider mite

Discussion in 'Cannabis Pests and Problems' started by Rocklobster, Sep 29, 2008.

  1. Rocklobster

    Rocklobster Senior Member

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    My mates plant about 5 weeks in bloom they said its been covered in white spots n patches on the leaves 4 ages but thinkin it was a food problem they went down that root. Now its plain its spider mite coz ya can see them n there threats. Apart from keeping it sprayed and on the wet side is there anything they can do that wont harm the bud?.
     
  2. ninfan77

    ninfan77 Member

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    Oy don't keep spraying them with just water !!!

    Get some Neem oil and keep good ventilation so you don't get any bud rot.
     
  3. Rocklobster

    Rocklobster Senior Member

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    Aww thanks I've heard of neem oil before on plans. We got the keep them sprayed n slightly wet from a house plant book coz they dont like it they prefer the dry. Actually I'm suprised they got them bloom as it goes which just show how tuff mj actually is.
     
  4. Eskimo101

    Eskimo101 Banned

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    you can rub the whole plant with rubbing alchol.... i got spider mites on a kumquat tree i have did that and now its just fine
     
  5. ninfan77

    ninfan77 Member

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    Rofl Dont U Dare Do That To A Mj Plant !!
     
  6. Rocklobster

    Rocklobster Senior Member

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    Hmm a drunken mj plants hope it dont get rowdy at nite. Anyway we tracked down the source and cropped slightly early as the smell started to go.
     
  7. julia123

    julia123 Member

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    Yes, neem oil will be really helpful.
     
  8. TheWhoRocks

    TheWhoRocks Member

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    i hate those little fuckers.
     
  9. klondike_bar

    klondike_bar Senior Member

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    neem oil works. Ive had good luck using VERY diluted solutions of soap (dish or bar) sprayed on, then "rinsed" by a freshwater misting a few hours later.

    one or two applications, and the problem is pretty much solved (assuming you prevent the repetition of spider mites entering your grow)
     
  10. Rocklobster

    Rocklobster Senior Member

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    Phytoseiulis persimilis. Dont know there common name but there a well mean looking predatory mite.
     
  11. deleted

    deleted Visitor

    RAID... House and Garden, they make that shit for nutty people that spray plants and eat food. it does work.
    But really you got to go ghetto on em. FOG them bitches..
     
  12. PAX-MAN

    PAX-MAN Just A Old Hippy

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    The first thing I would do is go to your local garden centre and ask them for a spray that you can use on edible food. Then when you have such a product, just before your lights go on, turn the plant upside down and spray them thoroughly. Once you are finished give them a light spray on the top of the leaves. The reason you should do it before your lights go on is because you don't want to spray a hot bulb and have an explosion. Another way you can do this is to get a garbage bag and cover the plant completely and spray extensively into the bag and then close the bag for 24 hours. Repeat this according to the spray instructions. In the UK you can use Green Blockout spray I hear it's very good .

    PAX
     
  13. PAX-MAN

    PAX-MAN Just A Old Hippy

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    Spider mites are the bane of marijuana growers. Mites are not insects, but arachnids, the same family as spiders. They have eight legs. Your garden is probably infested with two spotted mites. When looking through a loop or magnifying glass, two black spots are visible on the pest's back. Gardens are also infrequently infested with the red spider mite.

    Spider mites are about the size of a poppy seed. They insert a tube into the plant and suck out its juices. Indoors, where they are not combating nature's challenges, mites multiply quickly and overwhelm gardens. Mites lay eggs after they mature, about two weeks after hatching. The females lay thousands of eggs over their lifetime. They hatch in about three days.

    Mites inhabit the underside of the leaf and are not readily apparent. The first indication of their presence is usually the sight of tiny brown spots circled by small yellow areas. These areas indicate sites where mites have used their proboscises to puncture the leaf surface and suck the plant's sweet juices. As the population increases they begin to build webs and can be seen commuting from one feeding area to the next.

    If only one plant or one section of a plant seems to be infected or if a plant is much more infected than the others in the garden, wrap it in a plastic bag to prevent infecting the other plants as you remove it from the garden.

    If your plants are growing vegetatively you have quite a few options. First you can wash them with a moderately vigorous spray to knock down the mite population. This will help the plants by lessening their loss of vital juices. Prepare a spray with a teaspoon of real soap such as Dr. Bronner's peppermint or eucalyptus liquid soap per gallon of water, or spray with Safer's horticultural soap to help dislodge and suffocate the pests. Mites are found on the underside of the leaves and must be sprayed there. If the plants are small or easy to handle it might be easier to dip them in the soapy water. Spraying can remove most but not all the mites, and it doesn't remove the eggs.

    A small mite infection left unchecked is a temporary condition. So it is unwise to go into flowering with infected plants. The problem is that after the plants are one third of the way through flowering, two to three weeks, you want to avoid spraying with water or soapy water to wash off the suckers.

    Mites must be eliminated before forcing or when they attack plants in the early stages of flowering. If not they will multiply with disastrous results. The skimpy buds will be low quality and covered with dead mites. It's not an enjoyable smoke.

    Spraying can be used to control mites through the vegetative stage and for the first two or three weeks of flowering. However, other means must be used to get the plants to the zero tolerance level. By far the easiest method is to use an acceptable miticide.

    There are several commercial miticides that can be used early in the season to kill mites.

    Pyrethrum has been used to kill mites. It is a natural pesticide produced by a close relative of the chrysanthemum. The problem with using it is that many races of mites have developed immunity to it. However, it is the first miticide you should try.

    Cinnamite comes as a concentrate that is diluted and sprayed on the plants. It contains a miticide derived from cinnamon oil. It is very safe and is rated least hazardous. It is quite effective but it doesn't kill the eggs. It should be used every three days for two weeks to make sure all the mites are killed soon after they hatch. It is a contact spray so plants should be dipped or sprayed on the leaf undersides. It is also effective against powdery mildew.

    Neem oil is a natural miticide derived from the nuts of the Neem tree, which is found in India. It is a mite repellent as well, so some gardeners use it as a prophylactic, spraying it on a weekly basis. I mix neem oil with Cinnamite to eliminate small infections. Cinnamite and neem oil are also used against powdery mildew.

    For growers who distrust anything commercial, try an ?herbal tea? that acts as a miticide. To each quart of water use a tablespoon each of ground cinnamon, ground clove and 2 tablespoons of ground Italian seasoning. Heat the mixture until it starts to simmer, then turn off the heat. Add 2 tablespoons crushed fresh garlic when the water cools to warm. Let the tea sit until it cools. Strain and save the water using a cloth or coffee filter. Add a few drops of liquid soap or dishwashing liquid to the water. It is ready to be sprayed on the leaf undersides. After spraying the mites off with water, spray it on the leaf undersides. It will eliminate the mites if it is sprayed every three days after the wash. Within two weeks the mites will probably be gone.

    Avid is a miticide registered for ornamental plants. Its active ingredient is abamectin, a derivative of a toxin originally found in soil bacteria. Avid is not registered for use on vegetables except in certain restricted situations. Other brands of abamectin such as AgriMek by Syngenta are registered for a wide range of crops. The AgriMek label calls for a minimum of a seven day wait between application and harvest. I wouldn't use marijuana if I knew it was treated with this pesticide during the last few weeks of flowering.

    Some gardeners have reported success controlling mites using predatory mites or other predators. These carnivorous mites reach an equilibrium with the herbivorous mites, keeping damage to a bare minimum. I have tried introducing mixed species of predatory mites a few times but have never been satisfied with the results. They did not get the problem under control. However, they can work and some gardeners swear by them. I probably didn't provide them with the right conditions. There are also other predators that eat mites, but I have no experience using them.

    Ultimately, the solution to the mite problem and the pest problem in general is to prevent the garden from becoming infected. Following certain simple rules will help:
    Wear freshly washed clothes or change into a garden outfit when going into the garden.

    Never work outdoors, especially in a garden or other vegetative or turf area right before working in your indoor garden.

    Pests are frequently carried in on shoes. Do like Mr. Rogers and change your footwear before you enter the garden.

    Don't use outdoor soil, tools or containers in the indoor garden

    If a plant is to be introduced to the garden, first do a close examination and then put it in quarantine for five or six days. Examine it closely, especially the underside of leaves, before placing it in the garden.

    Close up any unfiltered airways or holes through which plant pests might enter. Make sure that air intake from outside is filtered.

    I found thhis in a ask ED forum

    PAX
     
  14. Naturalhi

    Naturalhi Great hairy ape

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    I find mites are easy to get rid of, by either getting a commercial garden pestside or make some garlic tea. Either of these can be used and then be consumed, they both may be used every 2-3 days till the infestation is gone, especially when there are eggs hatching. Might take 4-5 applications.

    You shouldn't harvest till all signs of mites are gone.
     

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