Phalaenopsis and cymbidium silvery leaves
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Old 09-27-2023, 05:50 AM
Araska Araska is offline
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Phalaenopsis and cymbidium silvery leaves
Default Phalaenopsis and cymbidium silvery leaves

Hi, lately I've noticed whiter tiny spots on my phalaenopsis and cymbidium leaves. They look like they're washed out of colour. I've looked for mites, but can't find any on the orchids. Can you help me to figure out what can it be? Maybe wrong water (too hard) or not enough nutrients?
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Old 09-27-2023, 08:47 AM
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Ray Ray is offline
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Phalaenopsis and cymbidium silvery leaves Male

Looks like a pretty extensive mite infestation.
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Old 09-27-2023, 12:33 PM
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estación seca estación seca is offline
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Phalaenopsis and cymbidium silvery leaves Male

Welcome to the Orchid Board.

They're on the undersides of the leaves. Take a tissue in your hand. Start at the base of the leaf, where it connects to the plant. Press the tissue against the underside of the leaf. Press against the leaf as you move the tissue to the end of the leaf. Look for red or brown streaks.
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Last edited by estación seca; 09-27-2023 at 12:37 PM..
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Old 09-27-2023, 01:58 PM
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WaterWitchin WaterWitchin is offline

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Originally Posted by Ray View Post
Looks like a pretty extensive mite infestation.
Sure does!

---------- Post added at 12:58 PM ---------- Previous post was at 12:56 PM ----------

High humidity and lots of air flow will help. But first you need to get rid of the mites. I usually spray with rubbing alcohol everywhere on the plants and top of medium. Then immerse in water later or spray the heck out of them with a hose or in a shower. Then I mist or shower whole plant a couple times a week until pretty sure the mites are under control again.

To save some time, here's a quote from Estación Seca on a different thread that's spot on to assist.
Spider mites are tiny, and outside in the environment everywhere. They come into the house on animals, clothing, or even blown through screens by the wind. All plants must be watched for spider mites, especially during warm weather with low humidity.
I use 70% alcohol (rubbing alcohol) or insecticidal soap when I see them. Treat all plant surfaces and the top of the medium. A preventive method is to rinse the entire plant with plain water every 1-2 weeks. I spray all my plants every few weeks with plain water.

Last edited by WaterWitchin; 09-27-2023 at 02:06 PM..
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