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Defoliate leaves damaged by Spider Mites?

Discussion in 'Sick Plants and Problems' started by Nollie, Jan 1, 2020.

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  1. #1 Nollie, Jan 1, 2020
    Hello Grasscity,

    New grower here. I lost what seemed to be a fairly successful grow to a nasty infestation of Spider Mites. I cleaned the room what I felt was well enough but lo and behold I missed a few as they started attacking my new plant.

    These pictures are some of the damage they have caused. Since finding them on this new plant I gave it a cold shower which seemed to greatly reduce the numbers to almost zero. After a few days, I sprayed the leaves with 99% isopropyl alcohol diluted with water. Checking today I did not see any.

    My question is, should I removed the damaged leaves to help the plant heal and hopefully prevent them from coming back?

    When defoliating do I remove anything with damage even if new growth at once? or do it a little at a time giving the plant time to recover.

    My plan moving forward is to spray the plant with the water/ISO spray every third day to prevent a reappearance.

    I'm trying to grow as organic as possible using fox farm soil and very cheap LED lights. I consider this more of a learning experience than trying to yield big.

    Thank you for your time and happy new year! 82307154_591702448254473_1574098143820120064_n.jpg 80763853_580589042725081_1987749119862505472_n.jpg 80898207_2666563373419915_8240011842479456256_n.jpg 80805015_852071721920629_548918802071420928_n.jpg
     
  2. #2 memillero, Jan 1, 2020
    yes you can those bad leaf can have eggs throw it away of the plants
     
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  3. #3 Nollie, Jan 1, 2020
    makes sense, would it be best to remove them all in one go? or would that shock the plant? if it's too much to remove at once how much time do you recommend to let the plant recover before removing the remainder of the leaves?

    Thanks for your help!
     
  4. #4 memillero, Jan 1, 2020
    what percent of the plant are bad? I saw on internet people removing around 80 percent of the leaf before they change to flower and the plant recover very well. I would not defoliate more than 50 percent of the leaf in one day but is me personal preference. do what you feel is good for you plant
     
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  5. #5 Nollie, Jan 1, 2020
    It seems quite a few of the leaves are marked up on the older growth. The new growth coming in looks fine and healthy. I will do a little at a time and let it veg a little longer to recover.

    Thank you so much for all you knowledge!
     
  6. #6 swarmy, Jan 1, 2020
    looks like that plant needs some calcium, from them burnt spots on the leaves. calcium is semi-mobile it starts on leaves under the light kind of randomly, then along the veins as it progresses. look it up, you got webbing? Luckily I haven't seen mite damage in person in a long time, but i don't really mess around with outside worn clothes or shoes. I thought it was kind of whitish spots, I could be wrong. Trees you are only suppose to remove 1/3 at a time to reduce shock, but what ever is clever
     
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  7. #7 Nollie, Jan 2, 2020
    This damage started as the white spots but sadly progressed to this. I saw the eggs and many of them crawling on the underside of leaves. As for calcium I was using dry amends 4-4-4 for veg and 2-8-4 for flower, would there be something I could add to supplement calcium/magnesium other than cal/mag?

    Thanks for your insight!


    Sent from my iPhone using Grasscity Forum
     
  8. #8 swarmy, Jan 2, 2020
    I used a dolomite lime from "power grow". I think it had a better calcium:magnesium ratio then other dolomite lime, could be wrong, I picked it out a long time ago but I had a reason for it. Top dressed 1-2 tblsp in a 5 and watered it in, I think it took a couple of weeks to work. Then their is oyster shell but that prolly would take longer to break down. Maybe you could foliar feed it with a calcium source.
     
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