Leaves turning yellow and brown with black spots underneath

Discussion in 'Sick Plants and Problems' started by Frostnuggets, Jun 5, 2018.

  1. Hello so it’s my first greenhouse grow, done a couple indoor with basically minimal problems, but now that I’m outside I’ve got some stuff going on. My leaves on my plants are starting to turn brown and crispy. Upon inspection of the leaves I discovered tiny, tiny black spots underneath, like the size of a needle point. It seems to spread fast, it was originally on 2 of my bigger plants but moved onto the lower half of my smaller plants, I need some help with this, I’ve been spraying neem and rosemary oil on them ever 2 weeks since I got them to keep all bugs and mold away. I honestly can’t tell if it’s mold, bugs, or a definciency. The humidity has been fairly low in there with it being about 40-50% during the day. Not sure about night tho. If you have any insight on this please let me know
     

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