Sep. 6, 2018
Japanese rose, Kerria japonica
Is it a rose? This Japanese rose is in the rose family but not the rose genus. So you decide. I'd say it is whatever we call it. And so is Rosa rugosa, the actual rose that we call Japanese. Gardeners are fond of this one, which has a habit much like Forsythia. Double flowers are common. Naturalists may not be as fond, but so far it is not an invasive problem. That's probably because of a rust that specializes in killing this species, a plant disease conservationists are tempted to appreciate, gardeners not so much. This Japanese rose has been reported from AL, CT, IL, MI, NC, NH, NJ, NY, OH, PA, RI, SC, TN, UT, VA, NS, and ON. Hidden Lake Gardens, Lenawee Co MI, 5/15/13.