My potted hydrangea is pink not blue!!

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This topic contains 13 replies, has 9 voices, and was last updated by  PottedGirl 4 years, 10 months ago.

Viewing 14 posts - 1 through 14 (of 14 total)
  • Author
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  • #9197

    PottedGirl
    Participant

    Evening everyone,

    So last year I bought a blue hydrangea and planted it in a pot. I’ve done everything I was told to in order to keep it blue … this year it has flowered pink!!! Can anyone suggest what I should be checking/doing???

    Thank you so much!

    PG

    #9205

    PottedGirl
    Participant

    Here it is

    hydrangea

    #9224

    Anonymous

    Hey PG,

    I can’t see your pic …. what compost did you plant it in? Have you fed it at all?

    Lindsey

    #9228

    Gardening God
    Participant

    If in doubt, buy a soil pH testing kit from a garden centre. A blue hydrangea needs a pH of between 5.2 and 5.5 (pinks need 6.0-6.2)

    GG

    #9232

    Gnomation
    Participant

    Maybe test the pH of your water?

    #9233

    PottedGirl
    Participant

    ah ha! Thanks, Gnomation. While I would feel a little silly for something so simple to be the answer … I really want my beautiful BLUE hydrangea back!!!

    PG

    #9234

    PottedGirl
    Participant

    *possibly silly question*

    Can I use a ‘soil’ testing kit? Or is there a special ‘water’ pH testing kit?

    Thanks!
    PG

    #9284

    HaroldMe
    Participant

    Evening PG,

    Litmus paper! It is very inexpensive. Easy peasy.

    Harold

    #9287

    Verity94
    Participant

    Hey PG,

    You can buy electric testers to test the pH of water for about £10

    Verity

    #9290

    JoshGus
    Participant

    I remember making our own tests with red cabbage at school! There are quite a few (read: millions) of posts on pinterest:
    https://uk.pinterest.com/samiartist/research-litmus-paper/

    Josh

    #9315

    Abi Jackson
    Participant

    Ha, Josh!

    Think I’ll have a go ‘just because’ !

    GF

    #9339

    PottedGirl
    Participant

    Thanks for the tips everyone and sorry you can’t see my picture – don’t know why.

    GF – yes, I too fancy a bit of a science experiment!!

    PG

    #9612

    PaulaG
    Participant

    The point of a low ph is in order to make Aluminium available to the hydrangea – Aluminium is the key to making a hydrangea turn blue. So if your soil is the correct ph (5.2-5.5) then you can add aluminium as follows:

    Make a solution of 1 tbsp aluminum sulfate per 4 litres of water and feed to hydrangeas (which are at least 2-3 years old) during the growing season. Beware Water plants a lot before application and pour solution on cautiously, as too much can burn the roots!

    Good luck

    Paula

    #10296

    PottedGirl
    Participant

    well, i’ve cut it back now … let’s see what happens next year!

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