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Flower power

Next time you're on the A40, spare a thought for Oxford's horticultural development officer, John Alcock, who told the Times last week about the intricacies of roundabout design.'The roundabouts are always a challenge, ' he declares. 'The perfect flowers are geraniums, petunias and marigolds, all of which can tolerate fumes, ' he says, 'though you can get a bit bored with marigolds. On the Woodstock roundabout we've six beds with horseshoe shapes, and I'm very proud of them. We have ...

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