Denver Botanic Gardens' Green Roof, built in November 2007, is the first green roof on a city-owned building in Denver. Designed to be publicly accessible, interpretive and educational, it demonstrates the many benefits of green roofs to communities and the environment.
Species data is collected annually to determine their suitability for green roof use along the Front Range. Plant taxa on the Green Roof are selected for characteristics such as rate of establishment, environmental tolerances, commercial availability, aesthetic value and potential to add wildlife habitat.
Green Roof irrigation is recorded each year. Since 2011, the irrigation system has been activated after July 1. Annual irrigation totals include:
2017: did not irrigate (Precipitation 13.08 inches)
2016: 8 inches (Precip 12.86 inches)
2015: did not irrigate (Precip 29.01 inches)
2014: 1 inch (Precip 17.51 inches)
2013: 2 inches (Precip 19.3 inches)
2012: 8 inches (Precip 12.73 inches)
2011: 3.5 inches (Precip 22.04 inches)
2010: 8 inches (Precip 12.45 inches).
In 2007-2009, establishment watering of approximately 4 to 6 inches per month took place throughout the growing season.
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