When you run a garden centre, you're always looking for new things to sell. This keeps things interesting for you and for your customers. You can find 'new' things at trade fairs, and this year we have visited fairs in Birmingham, London and Cologne. It's exciting, and these places are big. There are between three and ten halls, and each hall is about the size of an airport terminal building, divided into an endless grid of stalls. The fair we most recently attended in Cologne, for example, had over 2,000 exhibitors and 40,000 visitors.