“Phragmiticide” is a phased restoration plan to revitalize the homogenized landscape of Marine Park in Brooklyn, which has been heavily affected by the invasive plant species, Phragmites australis. This invasion was accelerated by an influx of nitrogen from a nearby wastewater treatment plant and an adjacent golf course’s use of nitrogen-rich herbicides. Additionally, the removal of diverse competing plants to make way for the development of the golf course has further facilitated the rapid takeover by Phragmites australis. This led to a monoculture landscape, ecological disruption, and changes to the habitats of native wildlife, including the endangered Monarch Butterfly. As a whole, “Phragmiticide” proposes replacing the golf course with a Visitor Center as an alternative entertainment model while mitigating the spread of Phragmites Australis and restoring the Monarch Butterfly habitats by taking advantage of the existing environmental movement and local regulations. This phased plan aims to counteract the ecological monoculture by paving ways to attract Monarch Butterflies and other pollinators back to the area.