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A special Gardeners’ Corner from one of the oldest botanic gardens in the country. The Royal Botanic Garden Edinburgh houses important and endangered plant collections and it’s also a renowned centre of horticultural education. In this programme, David Maxwell gets an introduction to the gardens from David Knott, curator of the living collection before heading to the huge herbaceous border where Kirsty Wilson explains why perennials are good for gardening on a budget and how to control invasive bindweed. In the experimental rain garden, David finds out about gardening with climate change in mind and in the rock garden Scott Cook reveals why the place smells like bubble gum. David finishes his tour in the glasshouses which are currently closed to the public and undergoing a multimillion pound renovation known as ‘Edinburgh Biomes’. Also on the programme Helen Mark visits Malachy Smyth at North Sperrin Herb Farm.