A Treat for Penn's Landscapes: Compost Tea

October 10, 2012

In an effort to employ more organic solutions in the maintenance of Penn's campus landscapes, Facilities and Real Estate Services has begun treating the campus soil, grass, and plants with compost tea. Compost tea is all natural, made by soaking or steeping compost in a tank of water. The resulting "tea" is then applied to soil and vegetation, improving the microbial health of soils, making it more difficult for weeds to grow, and reducing the need for pesticides.


The compost used to make the tea comes from our campus food waste, compostable cardboard, napkins, and paper towels that are sent to the Wilmington Organic Recycling Center where they undergo an eight-week composting process and are returned to be used for the compost tea product. Each tank makes 250 gallons of tea which can cover one and a half acres; 15 to 20 tanks will provide enough tea for the entire campus. The first round of the compost tea application took place early this Summer, with twenty different green spaces across campus sprayed with the tea, followed by further rounds in the late Summer and into the Fall.


Penn’s underground cisterns on campus have the capacity to collect and reuse 340,000 gallons of water each year.

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