The search for church growth among Christian congregations continues unabated. In Adelaide since 2000 Holy Trinity Adelaide, the oldest parish in the Anglican diocese of Adelaide, has established seven new congregations based on the concept of church planting. This has involved major commitments of cash and people, the latter to migrate to a carefully researched new location (often a local school hall), along with a carefully chosen leader, to commence a new congregation. Sustained by the Holy Trinity trust deed, which provides significant legal support, these new congregations have been operated within a network providing legal, financial and planning support. Each congregation has in turn developed the capacity to engage in further church planting. While successful and continuing, the process has raised challenges for the diocesan polity that may produce difficulties in years to come.