Spider mite resistance and clones...

Discussion in 'Sick Plants and Problems' started by Sylvatican, Sep 28, 2022.

  1. Hi all, I've only really done autos before, now growing out a couple golden lemon haze photos from Seedstockers. I've scrogged my 60cmx60cm tent, taken cuttings from each of the two visibly different phenos, filled and ready to flip to flower. Now one pheno is absolutely covered in spider mites despite a hefty dose of predatory mites, which have always worked brilliantly for me, but not now! The other pheno seems completely unaffected despite being side by side.

    I'm tempted to scrap the mite prone pheno and let the other good one fill the space. Does this seem like a good plan? If so, will one plant in a 13 litre bucket of soil be ok, or pot up one last time? Under
     
  2. I use Pyrethrum
     
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  3. I avoid chemicals wherever possible, not averse to neem oil, and predators have always worked so well before now.
    Guess you could call me an organic hippy!
     
  4. Pyrethrum is organic, and doesn't leave a residue,
    I will not use Neem oil in flowering .
     
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  5. Oh, is that the one extracted from a plant? Cheers. And I tend to avoid spraying anything in flower.
    Gutted as I've only had mites once before in nearly ten years of growing. Now I'm trying to move toward cloning for consistency of harvests for medical use, it seems more important to deal with the little gits, and they're worse than ever.
    Is there any sense in scrapping the badly affected one and keeping the healthy one? I'm thinking it might have some sort of genetic resistance, and a mite prone plant would be one to not keep...
     
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  6. The pyrethrins are a class of organic compounds normally derived from Chrysanthemum cinerariifolium that have potent insecticidal activity by targeting the nervous systems of insects. Pyrethrin naturally occurs in chrysanthemum flowers and is often considered an organic insecticide when it is not combined with piperonyl butoxide or other synthetic adjuvants.[1] Their insecticidal and insect-repellent properties have been known and used for thousands of years.

    Pyrethrins are gradually replacing organophosphates and organochlorides as the pesticides of choice as the latter compounds have been shown to have significant and persistent toxic effects to humans.

    Pyrethrum
    was a genus of several Old World plants now classified as Chrysanthemum or Tanacetum which are cultivated as ornamentals for their showy flower heads. Pyrethrum continues to be used as a common name for plants formerly included in the genus Pyrethrum. Pyrethrum is also the name of a natural insecticide made from the dried flower heads of Chrysanthemum cinerariifolium and Chrysanthemum coccineum. The insecticidal compounds present in these species are pyrethrins.
     
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  7. I would spray the plant with soapy water! Insecticidal soaps are old-fashioned way to kill small bugs without poisons, and it can be easily rinsed off the next day with plain water! A little bottle of Dr Bronner's Peppermint soap is about $6, but if you have a Grocery Outlet in your area, they usually have large bottles for $11.

    Insecticidal soaps work by stripping the waxy coating off of the mites' bodies. The waxy coating prevents dehydration and without it the mites soon die of dehydration! :yay: Only thing is, you have to do a thorough job and get the whole plant wet, including the underside of the leaves.

    How to Use Dr. Bronners As Insecticidal Soap. (news - 2014)
    https://www.hunker.com/12257372/how-to-use-dr-bronners-as-insecticidal-soap

    I think I would spray down the sickly plant, let it sit overnight, then rinse it very well and harvest it. Then I'd make canna-oil from any buds. You might consider taking a few clones from the healthy plant for your next grow if it's not too far along into budding.

    FYI- Dr Bronner's Soaps list hemp seed oil as one of their ingredients, and they support legalization!



    Granny :wave:
     
  8. Haven't even started flowering yet. I was hoping to get a mother going from a cutting of each pheno, but now I'm wondering about abandoning the spider miten one in favour of the other...
     
  9. It seems like a good idea to me to get rid of the covered one or at least plant it outdoors somewhere, obviously no guarantees they wont setup shop in the other. When I was growing organic I used neem granules in the media every other month and although I got mites occasionally they never managed to take over.
     
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