No, it's not Dianthus g. Firewitch but rather just plain Dianthus grationopolitanus (Bath's Pinks). It can eventually get to 30+" across and only about 6-8" high. Both are very fragrant and bloom early spring, sometimes the pink color varies, from a light to a darker shade, I have grown many from seed (both varieties and others toooooo!!!!)
Pix from last year, oh and the fragrance is superb!!!!!!! Bath's pinks are only a spring bloomer, being at 6800-6900 feet, I tend to get more blooms but not like e. spring. Pix 1,2 +3
pix 4: Dianthus x. Loveliness, a great one to look for, blooms all season, comes in a mix of colors and is extremely fragrant.