The flowers developed but remained green from June – September. Could this be caused by a lack of sunlight? They are in a partially shady spot which gets ~4 hours of direct sunlight on a sunny day. Or something to do with the soil?
Some hydrangea varieties actually have green flowers. If it’s one you’ve just planted, or you’ve just moved in to a new place and this is the first year you’ve had it, maybe you have one of these green flowering types.
Automatic_Jello_1536
I think it’s the sun Not pH.
White hydrangeas stay more green in shadier spots So probably the same thing here
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PH affects Hydrangeas blooming colour.
Has it flowered pink before?
Some hydrangea varieties actually have green flowers. If it’s one you’ve just planted, or you’ve just moved in to a new place and this is the first year you’ve had it, maybe you have one of these green flowering types.
I think it’s the sun
Not pH.
White hydrangeas stay more green in shadier spots
So probably the same thing here