Cool Portland International Rose Test Garden Parking Ideas. Web international rose test garden: Web more than 10,000 individual rose bushes bloom in the international rose test garden (irtg) from late may through october, representing over 610 different rose varieties.
Contact waparkroses@gmail.com for a volunteer orientation. The rose garden is in washington park, and it is free to visit. Web 400 sw kingston ave portland or 97205.
