sooty deposit on ericaceous plants
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I have a black sooty deposit on 2 pieris, and several quite large rhododendrons. At the nursery they said I could just wash it off - this is all very well, but they are quite big plants and it would take me for ever! Is there anything I can spray which will do the trick?
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- Replies: 1
- Posted: Thu. 29th April 2010 17:05
I think the sooty deposit is the waste from scale mites. You may find small white dots on the opposite side of the leaves. A regular pest control product that clears scale bugs should work and the soot or rust will wipe off (however much you can manage - it's worth it) or eventually clear with rain and general weathering once the scales bugs have been dealt with! I have had the same problem with several camelias. Looks terrible but is quite easy to deal with.
from 'Mary,Mary' in Somerset
- Posted: Thu. 29th April 2010 21:04