A bold vision for Detroit’s vacant land is unfolding in Poletown East. Who's making public decisions Arboretum Detroit acquires vacant parcels from the Detroit Land Bank Authority and private donations. Planet Detroit will explore Arboretum Detroit in a community walk at 10 a.m. Saturday, Aug. 22. Rather than attempting to undo generations of contamination beneath the soil, Arboretum Detroit focuses on improving the landscape above. Greener vision for Detroit’s vacant landThe greening of Poletown East reflects a broader conversation unfolding across Detroit.