Spiraea douglasii is a species of flowering plant in the rose family. Common names include hardhack, hardhack steeplebush, Douglas' spiraea, douglasspirea, steeplebush, and rose spiraea. It is native to western North America from Alaska across southwestern Canada and the Pacific Northwest. It occurs most often in riparian habitat types, such as swamps, streambanks, bogs and mudflats. It grows among sedges, horsetails, wild blueberries, and other swamp flora.