White dust on boxwood ?

Discussion in 'Outdoor Gardening in the Pacific Northwest' started by Georgia Strait, May 12, 2019.

  1. Georgia Strait

    Georgia Strait Contributor

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    I will attach photo below ... approx 4 weeks ago this potted boxwood acquired a coat of this white dust like dandruff

    The other potted boxwoods nearby do NOT have this dust

    I assume it’s some sort of insect waste? If not, what is it?

    I suppose I could spray it off with hose water but I was hoping it would go away!

    Thank you in advance
     

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  2. Margot

    Margot Generous Contributor 10 Years

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    I've seen something like this before on beech trees - I think it could be a woolly aphid.
     
  3. Michael F

    Michael F Paragon of Plants Forums Moderator 10 Years

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    Yep, a woolly aphid. Whether it's an aphid specific to Box, or a widespread one that feeds on many species, not sure.
     
  4. Georgia Strait

    Georgia Strait Contributor

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    Thank you - I have seen a few tiny green insects approx size of the head of a sewing pin that one uses in fabric and crafts ... the RHS (England) says there are several types of woollies - interesting

    For those wondering - this is “Green Velvet” boxwood .
     

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