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To add or not to add Manure to red leafed plants

Is it my imagination but did I read that you shouldnt add well-rotted manure to the planting hole of red and brown leafed plants as they will loose the colour i.e go green?

Currently planting a bog garden and have a rheum (ornamental rhubarb) Rodgersia and Darmera which all have coloured leaves.  Thinking that the high nitrogen content may make the leaves green............what advise would you give?  Love some photos of anyone else's bog/ damp garden and shady garden.

Posts

  • punkdocpunkdoc Sheffield, Derbyshire border.Posts: 9,727
    No, what you have heard, is wrong.
    Southern trees bear a strange fruit
    Blood on the leaves and blood at the root
  • ButtercupdaysButtercupdays Posts: 3,731
    edited May 2018
    More to the point, you don't need to add manure to bog plants anyway. They have evolved to live in such conditions and the majority of them are thugs by nature and don't need encouraging!
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