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Thread: Yellowing leaf tips

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  1. #1
    Join Date
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    Default Yellowing leaf tips

    I have noticed a few of my orchids are getting yellow leaf tips (I grow under HID lights). Could this happen from lowered humidity? I started to notice this when the temps dropped along with the humidity.

  2. #2
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    Louis J. Aszod
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    Cattleya
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    Default

    If it's just at the tips, that's usually a sign of toxicity buildup--fertilizer or other salts. Is it just lower / older leaves, or are the new ones being affected too? That'll happen a lot of times if you fertilize a plant that you've let go dry (it's always best to fertilize when the roots are already damp) or if you've mixed your fertilizer too strongly.

  3. #3
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    Default

    Quote Originally Posted by lja
    If it's just at the tips, that's usually a sign of toxicity buildup--fertilizer or other salts. Is it just lower / older leaves, or are the new ones being affected too? That'll happen a lot of times if you fertilize a plant that you've let go dry (it's always best to fertilize when the roots are already damp) or if you've mixed your fertilizer too strongly.
    It could be a buildup. I hadn't fertilized in a while and could have shocked them. I guess it is time to flush them out.

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