What might be causing this?

Discussion in 'Sick Plants & Problems' started by Del, Jul 19, 2019.

  1. Jul 19, 2019 #1

    Del

    Del

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    About a week ago started to get these rust colored spots but only on one plant (different strains) its only on leaves connected to flowers that seem to be doing really well. I took a few off and inspected under a microscope and didnt see any webs or anything moving. No bugs. Is this the plant getting close or am i not giving it something.
    1/2 strength fox farm nutes every other watering. Cal-Mag, ph 6.0 waterings 20190719_154401.jpg
    I did give a small amount of chaching from fox farm as well. Flowers are looking and smelling strong.
     

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  2. Jul 20, 2019 #2

    The Hemp Goddess

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    Boy, the first pic looks like spider mites to me....it is hard to see anything in the other pics because of the light.

    Mites are really small, but you should be able to see them with a microscope or good magnifying glass. It is not unusual to not see webbing until the infestation gets really bad.
     
  3. Jul 20, 2019 #3

    Del

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    I will take some better pics and upload
     
  4. Jul 20, 2019 #4

    Del

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    Okay , I took better pics then looked at the front and the back of the leaves under the microscope. It seems to be a lesion like thing , nothing moving or resembling a mite or bug. Only on a few leaves and only one plant. 20190719_163515.jpg 20190719_163107.jpg 20190719_162908.jpg 20190719_162852.jpg 20190719_162809.jpg 20190719_162759.jpg
     
  5. Jul 20, 2019 #5

    Del

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    Yes I could see where the underside looks like mites but after careful inspection im not seeing anything insect/animal like. Just a bunch of lesion like spots, rust colored
     
  6. Jul 20, 2019 #6

    Del

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    And thanks very much THG for taking a look
     
  7. Jul 20, 2019 #7

    Del

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    August 10 is my harvest window
     
  8. Jul 20, 2019 #8

    umbra

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    Its bugs for sure. Might not be spider mites though.
     
  9. Jul 20, 2019 #9

    umbra

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    Broad or russets maybe?
     
  10. Jul 20, 2019 #10

    Del

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    Would they have parts distinguishable by site ? Like a head,legs,body ?
     
  11. Jul 20, 2019 #11

    Del

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    I looked up images of both broad and russet and what I am looking at is definitly not bug/mite.
     
  12. Jul 20, 2019 #12

    Del

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    It started when I started this two weeks ago
     

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  13. Jul 20, 2019 #13

    Del

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    After some research I think I have nutrient overload and maybe a calcium deficiency. Not a bug to be found
     
  14. Jul 20, 2019 #14

    Mick

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    Look up thrips. I have some very similar discoloration from the beginning of a thrip infestation. They are really tiny and pretty quick for a little bug.
     
  15. Jul 20, 2019 #15

    stepheneking

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    Del, is it looking any better?
     
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  16. Jul 20, 2019 #16

    Del

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    No not thrips. No bugs
     
  17. Jul 20, 2019 #17

    Del

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    Not thrips or bugs. I think its nutrients or too much LED. Not too worried. Not alot of time to go beore harvest
     
  18. Jul 20, 2019 #18

    QBCrocket

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    when you say under a microscope are you saying you are removing the leaves and having a look , because mites will jump ship as soon as you touch the leaf
     
  19. Jul 20, 2019 #19

    Del

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    No, there are no mites or insects, no bodies, no antennae, no legs. The spots I am looking at on the leaf are not moving or jumping ship heheh. They are not uniform and appear to be like a lesion.
     
  20. Jul 20, 2019 #20

    Mick

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    Same with the thrips. I got close enough to see one on the leaf with a jewelers loupe and watched it take off. Like a tiny flying piece of rice. 2 Mighty treatments later and sticky traps around the base and haven't seen any fresh damage since. Still got the discoloration from where they were snacking though and it looks identical to the above pics.
     

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