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Acer - white blobs

Hi,

The leaves of my 25 yr old Acer Palmatum are curling up and falling off.

The trunk and branches have many tiny white blobs.  Some of these have brown caps on them.

On one branch there was a brown insect with black edging and black lines on its back.

I have four other acers in the same condition.

Can anyone help please?

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Posts

  • mushermusher Posts: 389

    scale insects probably

  • Ladybird4Ladybird4 Posts: 37,906

    It looks as if your Acer is suffering from horse chestnut scale. This is caused by a little insect that feeds on sap. It shouldn't cause any lasting damage to your trees.

    Cacoethes: An irresistible urge to do something inadvisable
  • Ladybird4Ladybird4 Posts: 37,906

    Snap musher. image

    Cacoethes: An irresistible urge to do something inadvisable
  • DovefromaboveDovefromabove Posts: 88,147

    Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.





  • Kitty 2Kitty 2 Posts: 5,150

    Agree with musher and ladybird, scale insects.  The white stuff is them laying eggs.  I've had them on my acer, I wipe them off and squish them using tissue.  

    The orange and black bug in the last photo is a baby ladybird ?

  • Pete.8Pete.8 Posts: 11,340

    I had a very bad infestation on one of my acers a few years ago.
    I used an old shoe brush to brush them off the big branches, then in winter I used Vitax Winter Tree Wash sprayed all over and since then there's not a sign of them


    Billericay - Essex

    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
  • punkdocpunkdoc Posts: 15,039

    You are right DHR, we do all make our own choices, it is just that sometimes others have to live with the choices we have made.

    Farmers choose to use Neonicatinoids and we have to live with the decline in Bees and other useful insects.

    How can you lie there and think of England
    When you don't even know who's in the team

    S.Yorkshire/Derbyshire border
  • BodnantBodnant Posts: 2

    Thank you all for your replies to my appeal for help with my acers. I shall act upon your advice with confidence.

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