Continuing the series, one of the gentler relationships in nature is commensalism, the barnacle clinging to the whale’s back, the harmless epiphyte perched high in the trees. The host doesn’t lose; the guest gains a foothold. It’s subtle, unobtrusive, and rarely draws attention.

In the mixed ecology church, commensalism invites us to think about hospitality as a spacious, patient practice. Sometimes new worshipping communities, fresh expressions, or mission experiments find their home quietly alongside inherited churches, sharing the same space, maybe even the same pews. They get to try things out without demanding change or disruption. The traditional church hosts; the newcomer explores.
This is the art of supporting difference without crisis or competition. Systems thinking offers a helpful lens here: this relationship is a form of facilitative hosting that allows new life to enter the system with minimal disruption, it’s low-risk experimentation. It’s a testbed for innovation, a holding pattern for growth.

Leadership here isn’t about control but generosity. It’s creating receptive spaces that respond to emerging needs in the community. As Margaret Wheatley reminds us, “Leadership is not about control but about creating an environment where new possibilities can emerge.”

Practical examples are peppered through the history of church life. Take the laundry ministry in St. Cloud, Minnesota, part of a traditional parish but reaching neighbours unlikely to walk through the church door. They borrow a local laundromat, offer food and prayer, gradually building trust and belonging. The church hosts this venture without co-opting or reshaping it. It is hospitality without strings, a living metaphor for commensalism.
Yet, commensalism requires care not to slip into parasitism; hosts must offer space without fatigue, and guests must be mindful of their footprint. Systemic health depends on this delicate balance.
Hospitality in mixed ecology is, then, an invitation to host without ownership, to support without smothering, to share space and life with kindness and openness.