White powdery stuff?

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plantaholic186 Winnetka, IL Mar 23, 2008

Hi- I posted this on the Rhododendron forum as well, but I have some R. atlanticum that I potted up last week, and this week they all have this white powder on them. Does anyone know what exactly it is, and how I can get rid of it?

Thanks!

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ceejaytown The Woodlands, TX(Zone 9a) Mar 25, 2008

That looks like scale to me, and I would suggest spraying with a horticultural oil. You'll need to repeat in about a week, and perhaps another week later. Need to suffocate all of the crawlers as they hatch....

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