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Yellowing leaf tips

This is a discussion on Yellowing leaf tips within the General Orchid Culture forums, part of the Orchid Culture category; I have noticed a few of my orchids are getting yellow leaf tips (I grow ...

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  1. #1
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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.

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    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.

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    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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