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PostPosted: Fri Sep 04, 2020 8:40 am 
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Joined: Fri Sep 04, 2020 8:25 am
Posts: 2
Location: Australia
I have not been able to identify the white spots on my bamboo. I got these a couple of years ago and didn’t take much notice when their leaves began to die because that happened last winter too. Except it got worse and lasted longer than it should.


The white dots are not powdery or fluffy. They do not smear but flake off under reasonably easy pressure. They seem to be either shells or empty cases for living bugs but despite a lot of scrutiny (while I removed the worst-afflicted plants) I could find nothing moving, white or otherwise.

Any ideas?


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File comment: When first noticed, they were most dense around the main stem, just above ground level and spreading up about 2 inches. Clusters like this on higher branches is rare but many joints at mid point and below have 2-5 little white spots.
111D8C8A-8C86-4C65-BBC5-23AEE03FC60A.jpeg
111D8C8A-8C86-4C65-BBC5-23AEE03FC60A.jpeg [ 31.14 KiB | Viewed 650 times ]
File comment: As close up as I could focus. Little legs or just shredded edge?
EB306D90-3EFC-4351-AE50-978A5411EA89.jpeg
EB306D90-3EFC-4351-AE50-978A5411EA89.jpeg [ 47.79 KiB | Viewed 650 times ]
File comment: smooth, feels like a plant bump but is easily rubbed off, nothing moving ever spotted
38C26158-EE9D-467D-BB39-328543990513.jpeg
38C26158-EE9D-467D-BB39-328543990513.jpeg [ 20.55 KiB | Viewed 650 times ]
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PostPosted: Sat Sep 05, 2020 10:38 pm 
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Joined: Sat Jan 03, 2009 4:13 pm
Posts: 2924
Location: St. Louis area Location Details
Mealy bugs?

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Alan.
My blog: It's not work, it's gardening!


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PostPosted: Sun Sep 06, 2020 2:31 am 
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Joined: Fri Sep 04, 2020 8:25 am
Posts: 2
Location: Australia
Okay, thanks. I’ll get googling on mealy bugs. Much appreciated. :)


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PostPosted: Tue Sep 08, 2020 11:21 pm 
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Joined: Tue Aug 25, 2020 11:05 pm
Posts: 7
Location: Alaska
From your description, it sounds like scale insects. Have you got a larger version of the third photo? Scale sort of attach themselves to the plant, like limpets, and suck out the sap. I've used insecticidal soap, spraying and manually rubbing them off when they infested an orchid, to get rid of them.


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