Overview: A sparkling summer bedding display dazzles the eye this week in the Beechgrove Garden. More colour comes from Calla lilies and Black Eyed Susans in Carole's 6 x 8ft greenhouse, and it is tasting and testing time for Jim's tomatoes. Chris dons his waders and is planting in the pond. On his second visit to Tillycoultry allotments Jim looks at the communal greenhouses on the site, and finds out about the tuition sessions which help the 'plotters' use a range of garden machinery.