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Pieris, lace bug?

Can anyone help pls? 

I cant see any sign of bugs or wings on the plant. But my Pieris seems very unhappy. It’s planted in acidic soil and I don’t think it’s been overwatered etc. But the leaves Are yellow/brown spotted. All flowers brown and dead, and underside has brown debris which lead me to lacebugs? 

Can anyone confirm, or suggest another cause please? 

Thanks 

Posts

  • BorderlineBorderline Posts: 4,628
    If that is the underside of your leaves it doesn't look too bad, but if you say you have seen brown debris, then it is very likely Lace-bug infestation. Not easy to control other than prune out the affected leaves and promptly removing any fallen leaves. If grown in a container, make sure container size matches the whole shrub. Drainage should be good and it is watered well during the warmer months.
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