Petrorhagia been introduced to other continents. Petrorhagia Petrorhagia is a small genus of annual and perennial plants of the pink or carnation family, mostly native to the Mediterranean region. The genus is often referred to as Tunica, which is an obsolete synonym. It is low-growing with wiry stems and narrow, grass-like leaves. The flowers are small, in clusters similar to members of the genus "Dianthus", in pink, lilac, or white. "Petrorhagia saxifraga" is the tunic flower or coat flower, similar to Baby's Breath, but shorter, and used in rock gardens. These plants are mainly native to Eurasia, but some species can
Bacterial wilt of carnation caryophylli" is a soil borne bacterium that overwinters in the rhizosphere of soil forming close interactions with the host plant and soil itself. Additionally, it can also survive in infected host debris. "B. caryophylli" infects susceptible plants through wounds which are present at the base and the crown of the host. The successful dissemination of the bacterial infection can occur Pre and post-planting. Pre-planting dissemination occurs when the stems of Carnation flowers from the infected host are cut and placed in a water bed with healthy plants, before they are individually planted (the bacteria slowly spreads from one cutting to