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My oak sapling was doing well all summer, until a few weeks ago. It has these leaves that turn white. I removed one branch with white leaves already but it still seems to 'spread'. Anyone know what it is? Is it lethal or harmless? Oak

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  • How is your sapling doing these days? Did it survive?
    – MackM
    Sep 25, 2023 at 19:37
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    @MackM, Yes the plant survived :-) and the next year the white leaves did not come back. Just some temporarily inconvenience I guess...
    – benn
    Oct 27, 2023 at 11:22

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That’s because the leaves have ammonium nitrate due to high carbon concentration in air. How good is your ventilation ?

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    Welcome. I haven't heard of this, do you have a citation/reference for it May 10, 2023 at 13:40
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    Sounds like bogus, carbon has nothing to do with ammonium nitrate. And concentration of carbon? Do you mean that black powder?? The plant is outside, ventilation all over...
    – benn
    May 31, 2023 at 19:31

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