Periwinkle

The plant is usually grown as an annual. It has a woody stem near the base and can get 2-3 ft tall and spread out just as wide. It has long life span-20 yrs relative to most other plant species and a moderate growth rate. Periwinkle has dark green foliage and conspicuous blue flowers. Leaves are retained year to year. The five petal flowers are typically rose pink, but among the many cultivars are those with pink, red, purple and white flowers. The plant is easy to grow, and requires little or no attention. It does best in poor, well-drained soils.