My wife has 2 blue Hydrangeas at the front of the house ( north facing) for the last 8 years in large pots. But they have not florished and do not retain the blue colour for her....any suggestions?
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Over ten years, Gerry Daly answered more than 5,000 gardening questions. His knowledge is based in science and practical experience, and by working on radio and television. Access to the advice database is open
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