This document summarizes research on the performance of green roofs in subtropical climates. The research found that green roofs can provide greater thermal and hydrologic advantages in areas with extreme temperatures and variable rainfall compared to temperate regions where most research had focused. The study measured temperature profiles, water retention, plant response, and water quality on 6 types of green roofs and black and white roofs over 3 years. Results showed high variation in performance among plant species and roof types. Ongoing research is looking at plant establishment, survivorship, and weed control over time to develop optimal native plant mixes for green roofs.