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Help please - light patches on Cosmos leaves

HazledsHazleds Posts: 2
in Problem solving
The Cosmos in the centre of the picture has developed light patches on the leaves. Does anyone know what the cause would be and what I should do please? It is Cosmos "Lemonade" grown from seed. I had this issue with a few of my Cosmos last year; they developed these light patches on the leaves, didn't thrive, then gradually turned brown and died. 

I would be very grateful for any advice.

Posts

  • fidgetbonesfidgetbones Posts: 17,618
    Are you watering in the heat of the day? It looks like sunscorch. I would give them a good soak in the evenings.
  • DovefromaboveDovefromabove Posts: 88,147
    ... and try to water the soil not the plants 

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





  • HazledsHazleds Posts: 2
    Thank you. Usually water in evening or early morning but will try to avoid the leaves.

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