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In this week’s programme – do you ever wonder where all those bunches of flowers in the supermarket come from? David travels to a family business in Armagh which grows and imports flowers for retailers across Ireland and the UK. With a major public transport scheme underway in Belfast, the programme finds out how horticulture was put front and centre during the Crossrail project in London and a visit to a former Abbey near Enniskillen where a secret garden full of usual plants has been nurtured by Noel Crane for the last 4 decades. Brendan Little will join David in studio for live questions. gardenerscorner@bbc.co.uk