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07-25-2020, 12:15 AM
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Join Date: Jul 2018
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Location: Lower Hudson Valley
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Phal with tissue collapse. What is wrong?
Hello all,
I have this Phal I just got on eBay that has a problem with the newer leaves. It didn’t have this problem out of the box but it developed it not long after. It seems stable now.
I did have it outside for a period of time and then brought it into my air conditioned room. I can’t remember where the problem started.
The leaves have become pitted and collapsed in various areas. They aren’t mushy or wet but something is clearly wrong. This one did have mealy bugs to add to its problems.
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07-25-2020, 12:22 AM
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Join Date: Jun 2008
Zone: 10a
Location: Coastal southern California, USA
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What were the conditions outside? Temperature? Amount of sunlight? Like, any chance that it got a bit toasted? Newer leaves may have been more tender - and shaded the older, lower ones.
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07-25-2020, 12:31 AM
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Join Date: Jul 2018
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Quote:
Originally Posted by Roberta
What were the conditions outside? Temperature? Amount of sunlight? Like, any chance that it got a bit toasted? Newer leaves may have been more tender - and shaded the older, lower ones.
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It is definitely possible it could have gotten toasted. It was facing west outside above 85f as I remember. That said, it may have started developing this problem more so after I brought it into a cooler shadier area. I can’t remember so I’m just wondering what all the possibilities are.
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07-25-2020, 12:24 AM
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Phal with yellowing leaves.
As an aside, I also have an otherwise healthy Phal violecea with mottled yellow leaves (older ones). Is this a problem?
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07-25-2020, 12:26 AM
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Quote:
Originally Posted by BrassavolaStars
As an aside, I also have an otherwise healthy Phal violecea with mottled yellow leaves (older ones). Is this a problem?
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On this one, the yellowing seems to be on the older leaves. If so, those may just be on the way out. Have you had mineral deficiency problems on anything else? If so, others may have more insight, I have not had mineral deficiency problems but my water may have constituents that yours doesn't.
Last edited by Roberta; 07-25-2020 at 12:28 AM..
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07-25-2020, 03:40 PM
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Quote:
Originally Posted by BrassavolaStars
As an aside, I also have an otherwise healthy Phal violecea with mottled yellow leaves (older ones). Is this a problem?
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Probably not a problem. Or at least not a bad news thing or life-threatening.
Permanent yellowing of leaves can occur if the light intensity gets to some high enough level.
My phal and some other orchids (a paph) got too much of a great thing, and the phal leaf has now permanently gone yellow. Very much alive, but has been yellow for several months. And one of my paphs with quite a long leaf has the same yellow throughout the whole leaf ---- alive and smooth - but permanently yellow - and has been like that for 6 months.
A pic of the yellowed leaf of phal - an 'over-sun' case. The phal is now growing in a similar spot to where it was before, but just pushed further inward - away from the most sun-intense region of the covered-balcony growing area.
I think the phal is more sun hardened now - as it still gets many hours of direct morning sun.
Last edited by SouthPark; 07-25-2020 at 05:45 PM..
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07-25-2020, 12:36 AM
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Location: Phoenix AZ - Lower Sonoran Desert
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The first one looks like sunburn. Try never to allow sun to hit their leaves at all. They can occasionally tolerate it during cooler weather, but it's not worth the risk. When the sun is low in the morning or evening is when it usually happens.
The second one - how long has it been like that? How are you fertilizing?
I almost never say this here, but I wonder whether it could be Odontoglossum Ring Spot Virus:
https://staugorchidsociety.org/PDF/OrchidViruses.pdf
Last edited by estación seca; 07-25-2020 at 12:55 AM..
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07-25-2020, 02:35 AM
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Quote:
Originally Posted by estación seca
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I rarely fertilize this one. The last time must have been at the beginning of the spring.
It is an import from Taiwan (according to the vendor I bought it from) that I have had for around a year. I did buy it from a very reputable local orchid store also.
When I first bought it, there was no leaf mottling. This is something that happened more recently (in the late winter when it started getting warmer). I have never cut or divided this plant but I am a bit suspicious of it. I may test it.
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07-25-2020, 12:38 AM
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It's not just ambient temperature (85 deg F is not bad), it's leaf temperature - a blast of direct sun can damage a leaf in minutes - or less. Moving it to a cooler area will prevent further damage, but what's done is done... will probably be OK, just ugly until it grows some new leaves. Phals are relatively low-light plants, so any direct sun will very likely be the source of the damage.
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07-25-2020, 03:58 AM
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I would definitely test for ORSV. I would also fertilize more frequently.
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