Rosa gymnocarpa (Baldhip Rose) native to the PNW grows wild on an exposed bank on the back of our property. I had a close look today and found an orange substance on some of the stems and leaves. It rubs off to the touch but the vast majority remains. It certainly looks like a disease (Rust) that could potentially do more harm. Any ideas? Cheers, LPN.
The infestation is rust. The rose is peafruit rose (Rosa pisocarpa) or a similar one. Baldhip rose has dime-sized flowers, small leaflets and bristly stems. The sepals drop off of the tiny hips after pollination, thus baldhip rose.
