Diarmuid and Paul predict what the gardens of the future will look like. It's likely fewer people will own cars so perhaps driveways will be reclaimed as green spaces. Will VR and the metaverse mean we can travel back in time to see the likes of Hadrian's gardens at Tivoli? Diarmuid also tells the story of his balcony bath. Yes, he actually is bathing outside even though it's winter. And as a follow up to last week's episode, we hear how Diarmuid interpreted the story of Mary Eleanor Bowes in garden form.

This is the series finale of DIRT. We'll be back next month for a Christmas special with more episodes in the New Year.