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Cacti and Succulents: Attack of the black yuck

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Forum: Cacti and SucculentsReplies: 6, Views: 112
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Windsor, CA
(Zone 9b)

August 13, 2012
4:53 PM

Post #9240465

And it doesn't come off on the finger. What is it? Can it be cleaned off the plant or should I trash the plant? Thanks for any assistance. Xuling

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Redwood City, CA

August 13, 2012
5:29 PM

Post #9240501

I have no idea what it is, but it looks like some kind of fungus. Since the plant looks very diseased I would pitch it ASAP.


Fountain Hills, AZ
(Zone 9b)

August 13, 2012
6:07 PM

Post #9240556

Almost looks like mildew.
Windsor, CA
(Zone 9b)

August 13, 2012
7:32 PM

Post #9240678

I think that trashing it is probably the best course. It hasn't spread to the surrounding succulents, thankfully. xuling
Decatur, GA

August 14, 2012
5:02 AM

Post #9240911

Whatever it is it doesn't look good. I would toss it too.
Or let it wait it out in a quiet lonely place. I suppose it might recover.


Acton, CA
(Zone 8b)

August 15, 2012
4:30 PM

Post #9242766

looks like sooty mold, something that is pretty easy to wash off... grows from the secretions of mealy bugs/ants/etc... not usually a big deal itself, though looks bad... but often associated with other 'bigger deal' problems
Windsor, CA
(Zone 9b)

August 15, 2012
5:07 PM

Post #9242815

It wouldn't wash or wipe off. I trashed the plant. And I noticed that a little yuck was on a similar plant. I remove the leaves on that other plant. Hopefully it won't spread. Xuling

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