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03-18-2009, 05:39 PM
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Jr. Member
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Join Date: Feb 2007
Posts: 22
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What are these Black spots on my leaves?
I got these black spots on the leaves of my Angraecum didieri
any idea what it is and what could've caused it?
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03-19-2009, 01:54 AM
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Senior Member
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Join Date: Apr 2008
Zone: 9a
Location: Los Angeles, CA
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For me it usually is a sign that the orchid was grown under an incorrect temperature range.
I'm not sure what it would be called.
It's harmless unless it keeps spreading. If it keeps spreading it could be a bacterial or fungal infection.
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03-19-2009, 02:01 AM
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Senior Member
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Join Date: Apr 2008
Zone: 9a
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BTW I'm not necessarily saying that your orchid is currently grown under incorrect temperatures, just that it probably was at one point in time or possibly even currently.
You have to provide more details on how you're growing it.
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03-19-2009, 02:11 AM
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Jr. Member
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Join Date: Feb 2007
Posts: 22
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i guess it just happened recently. I have a photo of it when I just got it new and there's no black spots on it
It's sitting near the top of the tank were it's a bit warm. Should I move it somewhere a bit cooler?
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03-19-2009, 03:06 AM
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Join Date: Apr 2008
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How warm exactly is it? A number would help a lot.
When you unpacked the plant, was it exposed to the cold? Was it snowing where you live? How did the package arrive?
Also, what's the humidity? Number please.
Is there air circulation (computer fan)? Is it an open top tank?
How bright is the light? What kind of light are you using? How long is the light exposure?
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03-19-2009, 03:20 AM
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03-19-2009, 03:25 AM
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Join Date: Apr 2008
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I hope so to.
The problem with your plant doesn't appear to be severe anyways. It seems to be growing new roots which is always a big plus.
I wish you the best.
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03-19-2009, 09:14 AM
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Join Date: Sep 2006
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03-19-2009, 11:51 AM
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Senior Member
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Join Date: Jan 2009
Location: San Francisco, the Presidio
Age: 54
Posts: 139
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Quote:
Originally Posted by Ross
It's an early sign of rot in the leaves. The plant looks too wet to me.
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I agree. I see spots of standing water on the leaves, both now and when it was new, and I see slick of wet all over the whole plant. Interestingly, the water beads are about the same size and shape as the rotspots... eh?
BL
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03-19-2009, 01:30 PM
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Senior Member
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Join Date: Apr 2008
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Location: Los Angeles, CA
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The spots will not necessarily keep advancing, it may if it's too damaged. Normally if the problem is taken care of soon enough, the spots will just stay that way and the leaf will continue to live. The leaf/leaves just look unsightly that's all.
If it ends up falling off, don't panick if at least 3 or 4 of the newer leaves on a vandaceous plant are still alive and the root system is still intact your plant will still keep truckin'.
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