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Bob Flowerdew, Bunny Guinness and Anne Swithinbank are guests of Durham University.
BBC Radio 4
Bob Flowerdew, Matthew Biggs and Pippa Greenwood answer questions sent by post and email.
Eric Robson chairs the gardening phone-in.
The team answer some of the questions posed by gardeners on the Isle of Wight.
The team answer questions posed by gardeners in Devon.
BBC Radio 4 FM