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Yellowing leaves on Gertrude Jekyll climbing rose

Maneki_NekoManeki_Neko Posts: 14
in Problem solving

Every single leaf on my lovely Gertrude Jekyll rose has turned a uniform yellowish green. It has been happening slowly and they are no other signs of problems. 

Gertrude is a in her 3rd year and happily blooming in a very big container. I fed her in spring with Toprose. 

There is no chance she could be under-watered but maybe I am overwatering her? Should I try a soil moisture tester? I never know how damp the earth is supposed to feel…

I would appreciate any advice

[Gertrude on left, some other rose on right]


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Posts

  • DovefromaboveDovefromabove Posts: 88,147
    Hello and welcome to the forum 😊

    What sort of compost is Gertrude planted in? 

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





  • Maneki_NekoManeki_Neko Posts: 14
    Thank you! 😊 

    She is mainly in John Innes no 3 with some added multi purpose.
  • DovefromaboveDovefromabove Posts: 88,147
    🤔 I think @Busy-Lizzie  has grown Gertrude … I’ve given her a nudge … 😊 

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





  • ObelixxObelixx Posts: 30,090
    Yellowing leaves can be a symptom of nutrient deficiency, especially iron and magnesium.  Try giving your rose a foliar spray and a general watering of Epsom salts - 15ml of salts diluted in 5 litres of water.   It certainly won't do any harm and can be a great boost to many plants.
    Vendée - 20kms from Atlantic coast.
    "The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
    Plato
  • Maneki_NekoManeki_Neko Posts: 14
    Thank you, I will try that :)
  • Maneki_NekoManeki_Neko Posts: 14
    Would seaweed extract work as a helpful foliar feed?
  • Maneki_NekoManeki_Neko Posts: 14
    Thank you, Dove 
  • ObelixxObelixx Posts: 30,090
    Seaweed is a good allrounder for many plants.
    Vendée - 20kms from Atlantic coast.
    "The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
    Plato
  • Busy-LizzieBusy-Lizzie Posts: 24,043
    The most common cause for leaves being plain yellow like that without green veining or streaks is over or underwatering. Can you put your fingers down into the compost a few inches to see if it's wet or dry? A soil moisture tester would help. When you water a rose in a pot it is much better to give a bucketful every few days than a sprinkle everyday.
    Dordogne and Norfolk. Clay in Dordogne, sandy in Norfolk.
  • Maneki_NekoManeki_Neko Posts: 14
    I put my finger into the compost every day and it feels damp - and then I don’t know what to do: water again to keep it that way or wait till it dries out a bit ??  Usually I water again so maybe overwatering is the cause … in this cool summer, in a very large black plastic container - maybe leave watering for 2 days, so water every 3 days?
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