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Blue hydrangea turning green/turquoise

wakeshinewakeshine Posts: 967

My hydrangea teller blaumeise, which is supposed to be one of the best blues apparently has started going a very dull green/grey/turquoise. It was a really deep blue, almost violet, just a couple of weeks ago.

Where I am we have had some really heavy rain, but also a couple of days of very hot sunshine over the last fortnight or so. Is it because I put the plant in direct sunlight? Is it because of the rain?

It's planted in a pot in ericaceous compost, which I thought was supposed to maintain the blue? I have started watering it again with hydrangea colourant powder but I am not sure this will work...the new flowers opening are the original blue but also quickly changing.



  • When did you put it in the pot?  Sometimes this can occur when the plant is put into a new environment and should improve over time (i.e .next year).  Rain helps maintain acid pH level so it won't be that, but the sun could have an impact (I'm not sure that anyone really knows!)

  • DovefromaboveDovefromabove Posts: 84,017

    Many blue hydrangea flowers change to a beautiful turquoise/grey as they age.  Highly sought after by flower arrangers.

    You may be interested in the information here 

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

  • mushermusher Posts: 389

    Yes its just gracefully and beautifully fading away in to Autumn and winter.

  • wakeshinewakeshine Posts: 967

    Thanks Verdun...yes it is sad but I don't even feel like we've had much of a summer. A couple of days of sun and then heavy rain, then it repeats as such. So many flowers in my garden still haven't even opened - some dahlias ,rudbeckia, eucomis and lilies which were bought at a show so forced to bloom later. Also still hoping for late shows from some of my roses!

    BobFlannigon - it was potted back in April..........I guess I will just let it carry on doing its thing.

    Dovefromabove - thanks for that link, very interesting

  • wakeshinewakeshine Posts: 967

    Oh great. That paniculata (sounds more like a cake to me image!) is very pretty Verdun. i didn't realise that even the white ones change colour.

  • mushermusher Posts: 389

    Better to prune them  in spring time. The canes may look dead during those autumn and winter months.In my experiance they live on until the early part of the growing season. A good soarce to boast the young shoots on

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