Dianthus, it is a huge family that includes carnations and sweet williams, but the dianthus I love are the smaller perennial sort. We have pink, red, arctic fire, and, what we call, "Fancy" here on Our Funny Farm. These are easy to grow plants as long as they are in well drained soil with lots of sun. They don't spread, but the clump of flowers will slowly grow over time. Their bright blanket of flowers is a delightful addition to any garden edge.