Any top tips on growing good sized brassicas? Can I have some recommendations for a good compost mix for pots, which will sustain them all summer? What plants would you suggest I grow to encourage my two children to get stuck into gardening? Peter Gibbs and his team of gardening experts are in Central Oxford for this week's episode of Gardeners' Question Time. Joining Peter to resolve the audience's horticultural conundrums are passionate plantswoman Christine Walkden, garden designer Chris Beardshaw, and Head of Oxford Botanical Gardens Dr Chris Thorogood. Later in the programme, Dr Chris Thorogood clears up some of the common misconceptions we have about ants, and provides some insight on how beneficial they are to protecting the plants in our garden. Producer: Dan Cocker Assistant Producer: Rahnee Prescod Executive Producer: Carly Maile A Somethin' Else production for BBC Radio 4