What are the white blobs on my hydrangea stems?
Our Advice
This is a type of scale insect, which sucks sap from the stems and leaves. High populations can severely weaken your plant. We suggest you control this pest with spray of Sprayday 'GreenflyKiller' from SBM/Bayer, or Resolva Bug Killer from Westland.
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Angle shades moth
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Box blight
Box tree caterpillar
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Canker — Bleeding
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Centipedes
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Coral spot
Cutworms
Earthworms
Earwigs
Eelworms (leaf & stem)
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Froghopper
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Grey mould
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Leaf cutter bees
Leaf Rolling Caterpillars
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Leatherjacket
Lily beetle
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Mildew — Powdery
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Pear midge
Phytophthora root rot
Rose Black spot
Rusts
Sawfly — Berberis
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Thrips
Vine weevil
Whitefly
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Woolly aphid