Adam Frost dispels the confusion of the summer pruning of wisteria, and demonstrates an ingenious solution to planting in dry shade under trees. Arit Anderson is in Germany finding out about the incredible transformation of a disused industrial site into a thriving and beautiful park, beloved by visitors and the local community. Rachel de Thame heads to Gloucestershire to find out about the 100-year history of the gardens at Kiftsgate Court, and Nick Bailey profiles the many varieties of summer flowering clematis.