Garden Q&A: Why have my hydrangeas turned from blue to pink?

Whether you're a gardening beginner or expert, Irish Examiner columnist Peter Dowdall has the answer to your questions
Garden Q&A: Why have my hydrangeas turned from blue to pink?

Hydrangeas can shift from blue to pink. File picture

Question

Why aren’t my hydrangeas blue any more? I bought them in flower when they were a lovely blue colour, but now they are a dirty pink.

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