By Kat Harrold
Photo by ~ Jorg Breuning
Dianthus carthusianorum is a sun loving drought tolerant plant is sure brighten any green roof from extensive to intensive. Bright magenta flowers pop forth mimicking small fireworks from July to September. Slender grass like leaves and wiry stems make this a wonderfully drought tolerant selection. Dianthus carthusianorum prefers well drained soils and grows in small clumps about 10 inches in diameter in 2 inches high with flower stalks reaching about 10 inches in height.