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Detention pond in Antioch converted to wildflower meadow in pilot to help pollinators and cut HOA mowing costs
Summary
Evergreen Infrastructure and a local pastor cooperated to convert a detention pond at St. John Missionary Baptist Church into a seeded native wildflower meadow intended to support pollinators and reduce mowing; presenter cautioned that dead vegetation must be removed after first frost to avoid nutrient export.
At a Cumberland River Compact event, Van Holdom, owner of Evergreen Infrastructure, described a pilot project converting a detention pond at St. John Missionary Baptist Church into a native wildflower meadow to create pollinator habitat and reduce HOA mowing costs.
"If we can figure out a way to get this to work, what I'm gonna do is start promoting this to HOAs because they're paying a ton of money to get their detention ponds mowed all summer long," Holdom said, describing a trial he conducted at the church after the HOA and pastor agreed to an experiment.
Holdom said his crew killed existing vegetation with black tarps over the pond bottom through the winter, tilled and reseeded in spring with Tennessee native wildflower seed, used coir netting to hold seed and soil in place, and rolled the seed into the soil for establishment. He reported that native plants were beginning to appear and that the approach both reduces mowing and can create pollinator habitat important to monarch butterflies and other insects.
Holdom linked the pilot to broader pollinator concerns: he said studies show dramatic pollinator declines and noted an ongoing program by TDOT to distribute milkweed seeds to support monarchs. He emphasized the ecological role of native plants in taking up nutrients and supporting biodiversity while warning of a management requirement: after the first hard frost the dead vegetation must be cut back and removed, because leaving rotted biomass in the pond can release nitrogen and phosphorus downstream.
Holdom framed the conversion as a potential cost-saving and environmental strategy for HOAs and churches, with a tradeoff: lower summer mowing costs but a required post-frost clearing to avoid water-quality impacts. He described the church's pastor, Gary Murray, as agreeing to the experiment after the pond had previously been cleaned to resolve a violation with Metro (the presenter had assisted with that cleanup). There was no formal commitment or funding decision recorded at the event; Holdom presented the pilot as an operational case study.
No motions or votes were taken at the presentation.
