Ever since its founding in 1917, the garden has received the best roses from around the world. At first, European enthusiasts rushed to send hybrids to the new garden, hoping to save rare specimens from destruction during World War I. Today, growers send samples to be judged every June during the Portland Rose Festival, when experts inspect blooms and choose winners in the prestigious Portland Best Rose Contest.
For the visitor, the International Rose Test Garden promises row after row of fragrant flowers during spring, summer and even into the fall months. Most of the garden is arranged for viewing by category with each colorful variety clearly marked for identification. Volunteers are available for questions as they deadhead bushes to ensure better blooms.