Portland, Oregon, is famously known as the "City of Roses" due to its ideal climate for growing roses and its renowned International Rose Test Garden.

Portland earned the nickname "City of Roses" in the early 20th century because of its perfect climate for cultivating roses, with cool, wet winters and warm, dry summers. The city embraced this identity by establishing the International Rose Test Garden in 1917, which continues to feature thousands of rose varieties. Portland also hosts the annual Rose Festival, a tradition dating back to 1907, with parades and other events celebrating the flower. The abundance of rose gardens and the city's connection to this iconic bloom make the nickname a fitting tribute to Portland's botanical charm and cultural heritage.