Either to revitalize old growth, control their spread, or get new plants to cover your landscape, you might need to divide yarrow (Achillea spp.) every year — or up to every three years -- when its ...

Perennials—the plants that come back year after year—are always worth the investment. But you can save even more on that investment by simply dividing the plants that are already in your yard: In many ...

Yarrow (Achillea millefolium), a plucky plant that people all over the world have used for thousands of years for its medicinal benefits, tempts many gardeners to include it in their landscapes. But ...