The hunt is on for long lost plant varieties – David Maxwell finds out why groups like the Irish Garden Plant Society and Plant Heritage want to find and save plants that can no longer be bought. In Bessbrook, Hilary McKelvey explains why alpines are the ultimate in no-fuss gardening. On a visit to renowned plantsman Jimi Blake’s garden in County Wicklow, David finds out about the best flowering plants to follow snowdrops. In studio, Anna Hudson reveals why we should all eat our weeds and she answers questions with David from listeners. Email the programme at [email protected]