Could you please tell me what amount of sulphate of Iron I use to what amount of water? I have read that you can put it on the lawn but I cannot find what ratio, I would be really happy if you could help me.
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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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