 Green roofs are becoming more popular in urban areas due to their ability to reduce stormwater runoff. This research examined how different media depths, plant presence, and rainfall patterns affect the retention capabilities of green roofs. Results show that a planted green roof with a 10 cm media depth retains more water than a non-planted green roof with a 20 cm media depth during both growing and non-growing seasons. Additionally, the presence of plants increases the retention capacity of green roofs during heavy rain events. This article was authored by Perla Scheide, Rohan Benjanker, Susan Morgan, and others.