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Help with 2 orchid issues please

This is a discussion on Help with 2 orchid issues please within the Orchid Ailments / The Compost Pile forums, part of the Orchid Culture category; Attached are two photos. One of a vanda with spots on a couple of its ...

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  1. #1
    Sheryl's Avatar
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    Default Help with 2 orchid issues please

    Attached are two photos. One of a vanda with spots on a couple of its leaves along with one part of the leaf looking white. The second photo is of a brassovola Nodosa with a web on the root system. It had it last year but it did not affect the plant or blooming but I'm curious what it might be. Thank you so much for your help!Name:  image.jpeg
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    I am not sure what the cause of the first photo is as I have never seen that. On the second I had the same problem with some of my Vandas not too long ago, I gave it a good spray with dish soap and it was gone within a day or two and has not come back. I never could fine any insects or spiders that was causing this, so they must be extremely small.

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    The Vanda leaves appear to have sunburn. It happens sometimes even to plants that are used to direct sunlight as the sun changes position in the sky as seasons change and sunlight hits a flat leaf area directly that used to get hit at an angle. Then one hot breezeless day it becomes too much.

    There are spiders that spin dense sheets of web, often among clusters of twigs or in leaf litter near ground level. An orchid basket probably makes a great home. If you look you may find a spot where the web forms a funnel into the interior - the front door.

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    Concur with Kirk and Jack.

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    Thank you Jack, Kirk and Sriram. You've been very helpful! I'm gonna look for that tunnel tomorrow.

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    All the best Sheryl.

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    I agree with PaphMadMan almost certainly have sunburn, what more can concern are the brown spots, if they are watery, the photograph looks, but you can not see very well, there may be bacterial (one of the causes is sunburn, puddles, poor ventilation, etc ...), in this case should cut the part of the affected leaf, first disinfect the tool on the flame, sprinkle Cicatrene the wound and disinfect the plant with a copper-based products.

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    Don't destroy that web Sheryl, funnel spiders are great fro getting rid of pests.

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    Quote Originally Posted by Chris in Hamilton View Post
    Don't destroy that web Sheryl, funnel spiders are great fro getting rid of pests.
    I agree, arachnids (excluding T. urticae, T. telarius, E. Althaeae, etc.) Are valuable allies in the fight against pests.

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    Thank you all for your help. This is such a great forum with wonderful people helping. I really appreciate it! I checked the brown spots but they are not soft. I had moved the vanda out a little further on the branch recently for more sun so sun burn could definitely be he culprit. However, I am attaching another photo that shows brown along the stem. And some of the roots look like they have black mold on them. It has been like that since I purchased it in May but was so taken by the beautiful flower that I failed to notice until I got it home. Since then beautiful new roots have emerged from the plant and from the existing roots. Again, the brown spots on the leaves just emerged a couple of days ago.

    As far as the web, I will leave it. As I said earlier, it was there last year at this time but did not affect the plant or blooming cycle.

    Thanks again!

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