Definition of sooty mould in English:

sooty mould

noun

mass noun
  • A black velvety mould that grows on the surfaces of leaves and stems affected by honeydew.

    • ‘Often black sooty mold grows on the honeydew, but this mold can be gently washed off.’
    • ‘Like aphids, they also excrete honeydew, attracting black sooty mold fungus.’
    • ‘This drops to the leaves below and the black sooty mold develops.’
    • ‘This is sooty mold that grows on the honeydew that aphids excrete.’
    • ‘The honeydew's stickiness and the black sooty mold that grows on it can make a mess of plants and anything under infested trees.’