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Problem affecting impatiens, tomatoes and geraniums

I have a problem which is affecting my tomatoes, impatiens and geraniums. The leafs look white from a distance but that becouse it looks like the cells between the the leaf mebranes are being destroyed and you can see through the leaves. It is affecting the stems as well now. There is no sign of fungi or insects, can any body help.


  • lazy gardenerlazy gardener Posts: 317

    Where have you got them?image

  • pagnewpagnew Posts: 5

    Hi the plants are in a polytunnel and some in a conservatory but both places have got it, I have been leaving doors open when it gets too hot but not all of them have got it and lots in the strongest sunlight have not been affected. I have isolated the damaged plants but it seems to be 'spreading'. Some of the busy lizzies are collapsing and dying. It's almost like the leaf is being 'eaten' from the inside.

  • pagnewpagnew Posts: 5

    I have a mixture of both new guinea and normal ones but I have checked out the disease which is affecting normal busy lizzies and it's not that, there is no sign of any fungus or insects and it's affecting my pelargoniums and tomatoes in the same way. Not sure what to do. Never come across this before.

  • lazy gardenerlazy gardener Posts: 317

    It is not a disease-downy mildew does not affect plants this early in the season-it is cultural-too hot, too dry, too much direct sunshine

    In a greenhouse you need shading-these plants are being slowly cooked where they are now

    Get them outside in a sheltered spot -they should pick upimage

  • pagnewpagnew Posts: 5

    Ok Thanks for all your help, I will try puting them outside and hope they get better.

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