It's the grand final of The Big Allotment Challenge hosted by Fern Britton, and it's the gardeners' last chance to impress the experts - there can be only one winner.

This week, Jim Buttress has set a double grow challenge, asking the gardeners to present cauliflowers and cape gooseberries on the show bench. Jonathan Moseley sets his most ambitious challenge to date, asking them to grow perpetual carnations and use them, along with other flowers they've grown, to decorate a floral arch. And there's a triple whammy in Thane Prince's eat challenge - canapés, cocktails and confectionery.

Who will succeed and be crowned the winner of The Big Allotment Challenge? Show less