Sophie Thomson visits a eucalyptus oil farm, Costa Georgiadis reworks a banana circle, Tino Carnevale explores a home-grown arboretum, and we visit the home of an interior stylist whose indoor plant collection will amaze you.
In the first mystery box challenge of the season, the 22 remaining contestants discover the ingredients have been chosen from all corners of the globe by judge Melissa Leong.
In the first elimination, teams must create a classic fairy tale scene. They will have 12 hours to complete a fairy story that is recognisable and impressive. For one duo, the chance to be this season's Lego Masters slips away.