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Mould

Bee friendlyBee friendly Posts: 35
in Problem solving

Hi all, I have discovered that all three of my beloved Acer trees have thick white mould on the base of their trunks!!! Is this bad? They are healthy in every other way but they do grow in pots. Can this be fixed? All advice welcome.

Posts

  • nutcutletnutcutlet Posts: 27,441

    Can we see a photo please Bf



    In the sticks near Peterborough
  • Bee friendlyBee friendly Posts: 35

    I will try but technology and I don't always get a long!!! image

  • nutcutletnutcutlet Posts: 27,441

    Nor with me Beeimage



    In the sticks near Peterborough
  • DovefromaboveDovefromabove Posts: 88,128
    Bee friendly - to post a pic on here you need to click on the green tree icon on the toolbar above where you type your post, and follow the instructions.



    Good luck and if it doesn't work give us a shout image

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





  • Bee friendlyBee friendly Posts: 35
    I think I must be daft but I dont see a green tree icon on the toolbar image
  • PalustrisPalustris Posts: 4,307

    Next to the last one on the right.

  • Bee friendlyBee friendly Posts: 35

    Got it but I am still unable to download from my phone!!! So frustrating image

     

  • DBoardyDBoardy Posts: 1

    Hi, Without seeing the picture I can take a guess at it being Horse chestnut scale. I have the same problem and identified it only yesterday. Do a quick google for 'acer horse chestnut scale' and see if the images look like your problem. If so, the solution is below [source: .rhs.org.uk]

    Hope this helps,

    Dave

     

    Control Non-chemical control

    Large numbers of egg masses may be unsightly and alarming but plants cope with heavy infestations, so control measures are not usually necessary.

    Mature trees are too large to be sprayed effectively. On small plants, such as Japanese maples and bay trees, it may be feasible to scrape off the scales and egg masses when seen in early summer.

    Chemical control

    If a pesticide has to be used, small plants can be sprayed with plant oils (e.g. Vitax Organic 2 in 1 Pest & Disease Control, Bug Clear for Fruit & Veg), deltamethrin (e.g. Bayer Sprayday Greenfly Killer), thiacloprid (e.g. Bayer Provado Ultimate Bug Killer) or acetamiprid (e.g. Bug Clear Ultra).

    The best time to spray is in early July when the more vulnerable newly hatched scales are present.

  • Bee friendlyBee friendly Posts: 35

    Thank you Dave, I will google it and see if it matchs your description . Good to know it won't harm the plant too much.

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