Stall holders would pay extra to have their market stall here, above it would have been a town meeting room, where the stallholders' fees were collected and kept.
The event, now in its third year, will feature more than 100 stallholders and exhibitors, showcasing a variety of plants, gardening equipment and associated services.
While the depression of the 1930s had a negative effect on the trading of many market gardeners and stallholders, a few firms were able to consolidate.