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Old 04-13-2012, 11:38 PM
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Dark spot on Phal leaf

This phal I've had for a while, and it's currently working on a new leaf. It sits in a south window, but it's been pretty cloudy. The other day I noticed this spot on it's leaf. The middle of the spot feels kind of mushy. Does anyone know what this is?
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rlilia (04-13-2012)
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Old 04-13-2012, 11:45 PM
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Might be some infection or fungus... I would cut if off, just to stay on the safe side.
Will be interesting to hear what advice others, experienced growers, would have on that one.

Lood luck!
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Old 04-13-2012, 11:48 PM
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It looks like sunburn to me, but to be sure it isn't some nasty spreading thing, you can take a Sharpie and draw a ring around the discolored part. If it doesn't grow, it shouldn't be a problem. The next leaf will be fine, and the remaining green part will continue to nourish the plant.
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xKTx (04-14-2012)
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Old 04-14-2012, 12:00 AM
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It looks like a bacterial infection to me (third opinion to add to the mix..lol).
Those infections usually spread pretty rapidly.
Fishmom's advice is good, just keep an eye on it.
If it does start to spread or get larger, cut the affected part off, making sure you cut into green, healthy tissue with sterilized instruments.
You can choose to "seal" the wound with dessicating cinnamon if you'd like.
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xKTx (04-14-2012)
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Old 04-14-2012, 12:21 AM
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All plausible, I'll draw a circle around it and see if it spreads.
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Old 04-14-2012, 07:54 AM
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Did you check on the under side of the leaf?

I notice a white spot on the leaf (top edge a little to the left of the big area) which looks like scale. That's why I ask about the underside, the crawlers of Boisduval scale will collect in mass on the underside of leaves producing an area that will suddenly go yellow.

If the underside does not have a cottony mess, the you are likely looking at a burn. A bacterial infection will usually have a yellow edge.
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Old 04-14-2012, 08:38 AM
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My 2cents...I vote w/the sunburn group. If you look at the curve of the leaf...and if it was sitting in that south window just right...that is the area the sun would've hit perfectly.

If it's right in a S window...move it back a bit for now. Especially if there are no obstructions outside that window. Last month the South window in my house was intense enough (angle of the sun this time of the year) to turn a couple of brassavolas purple. Last year that same south window "tanned" the blind pattern into a catt leaf. It can get pretty intense when the sun is at that perfect angle in the sky.
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Old 04-15-2012, 02:24 AM
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Quote:
Originally Posted by FLBob View Post
Did you check on the under side of the leaf?

I notice a white spot on the leaf (top edge a little to the left of the big area) which looks like scale. That's why I ask about the underside, the crawlers of Boisduval scale will collect in mass on the underside of leaves producing an area that will suddenly go yellow.

If the underside does not have a cottony mess, the you are likely looking at a burn. A bacterial infection will usually have a yellow edge.
There's no cottony mass, so I'm going to assume sunburn for now. I've moved it back a couple feet from the window though. Thanks for all the help guys
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