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Scale? Leaf residue from pest?

Posted by greattigerdane z5NY (My Page) on
Thu, Mar 10, 11 at 19:52

I'm not sure what I'm looking at here on my hoya finlaysonii. I know there are different types of scale out there, but this is not the typical houseplant scale with brownish colored bumps.
The marks are slightlu raised, white and looks almost tarter like. Some are small, not fully rounded, some are streaks.
Is this a certain type of scale?
Or. maybe this is thrip/pest damage and the white is the juice from the leaves scabbing over?

Here's a couple of pictures

Thanks,
Billy Rae

nnn 2875

nnn 2872


Follow-Up Postings:

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RE: Scale? Leaf residue from pest?

You might start at the link below until someone else comes along that knows more.
The link is for diseases not pests but it might help...

Here is a link that might be useful: asp net


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RE: Scale? Leaf residue from pest?

Perhaps not a disease/pest at all, but instead edema? Sometimes spelled oedema.


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RE: Scale? Leaf residue from pest?

Thanks gobluedjm and jean001a, much appreciated!

I'm glad no one thinks it's a pest! I had sprayed the leaves a couple of times before and the marks are still there, although they can easily be dislodged with a little surgery using a sharp kitchen knife though.

I will look at the site goblue and look up some photos of edema.

Thanks again:)
Billy Rae


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