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Pelargonium problem

I have repotted my pelargoniums and cut them back, to over winter in a cold greenhouse. However, on checking them today I have noticed the leaves have a large number of very, very small black things on the leaves. I think these might be some sort of black fly, although they are not moving or flying. Can anyone help please?

Posts

  • Pete.8Pete.8 Billericay, EssexPosts: 9,869
    Could it just be bits of compost that have stuck to the leaves when you were re-potting them?
    If it is blackfly, there's no need to do anything as the weather will soon kill them off in a cold greenhouse
    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
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