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LAST month, a campaign by the gardeners to be more environmentally friendly. One piece of advice was to get a water butt and use .
You might think there is plenty of water to go around in a rainy country like the UK, but it is a waste of energy to give plants tap water, which has been intensively treated so it is fit to drink. Rainwater is perfectly good enough for most plants and may even be better, as tap water contains dissolved magnesium and calcium, which…
