Of all the common names in circulation, “Seven-Sisters Rose” is the most polite. This is a weedy, thorny rambler that covers itself with heavenly white flowers once a year, scenting the landscape with rose perfume. The individual flowers may be a bit sloppy, but the overall effect is dazzling. Then, all too soon, the show is over, and the plant goes back to being a pest. Most of these were blooming next to a parking lot in Peters Township, but the picture directly below was taken in South Side Park.