Each year, a week-long congress takes place between August and October, hosted by a different country annually. This gathering serves as a vital chance for association members to explore global trends and connect with colleagues from various countries. The event includes a business meeting, an in-depth tour of garden centers, and a fantastic social program.

Delegates at the IGCA Congress can select from three distinct formats. While the overall itinerary remains largely consistent across all options, the primary distinction lies in the level of interaction offered.