Catharanthus roseus (ca-tha-RAN-thus ro-SAY-us)
Annual Full direct sun Height 9 - 12 inches Spread 12 -15 inches Spacing 9 -12 inches
HABIT: Low, compact annual for dry, extremely well-drained areas.
CULTURE: Plant in any well-drained bed in full sun after the weather turns permanently warmer.
USES: Summer color in full sun.
PROBLEMS: Too much water or planting too early in the spring is sure death for this plant.
NOTES: Always plant the dwarf varieties so they won’t droop over. Native to Madagascar. Many gardeners have stopped planting periwinkles because of the disease Phytophthora, but it can be avoided with the organic program. Periwinkles must be grown in full sun all day long and the morning sun is the most important sunshine of the day for plants.