To illustrate his ideas he turned a patch of grass near a housing estate in South London into such a garden, inspired by the flower beds at Buckingham Palace, and incorporating beans, salads and many other foodstuffs.

CNN: Transforming England's towns into green and pleasant land

And without sufficient energy stores, coffee trees are unable to flower and produce the fruits whose seeds become coffee beans.

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There are herbs growing in flower boxes at the bus stop, raspberry canes on waste land, cabbages in the flower beds at the local park - and even beans between the graves in the local cemetery.

CNN: Transforming England's towns into green and pleasant land