Vinca difformis
Intermediate Periwinkle
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Intermediate Periwinkle (Vinca difformis) - Description
Vinca difformis, commonly called the Intermediate Periwinkle, is an evergreen, flowering subshrub native to Western Europe, including the Iberian Peninsula, France, the Italian Peninsula and Sardinia. Its whitish-blue flowers have a blooming season from late winter to early spring. It grows to about half a meter, and forms mats over a meter across.
Intermediate Periwinkle (Vinca difformis) - Blooming
Flowers in early spring. The flowers are shaped like pinwheels, which is indicative of its plant family, Apocynaceae. Vinca blooms best when grown in full sun.
Intermediate Periwinkle (Vinca difformis) - Growth
Evergreen subshrubs and herbaceous perennials. Periwinkles generally grow prostrate along the ground and will root when the stems touch soil. Very useful as a ground cover or even to root a hillside to prevent excessive soil erosion. Grows best in full sun or partial shade. Vinca may exhibit weed-like behavior.
Intermediate Periwinkle (Vinca difformis) - Planting
Plant the dwarf species (V. minor) 1 1/2 ft. apart. Plant the larger species (V. major) 2 1/2 ft. apart. Can also propagate from semi-ripe cuttings in summer, or by division in early spring or late fall.
Intermediate Periwinkle (Vinca difformis) - Pest
Leafhoppers, scale insects, and aphids. Other issues include leaf spot and dieback.
Intermediate Periwinkle (Vinca difformis) - Interesting facts
Vinca is native to the woodlands of Europe, Northern Africa, and Central Asia. All parts of Vinca can cause stomach discomfort upon consumption.
Intermediate Periwinkle (Vinca difformis) - Soil and irrigation
Does fine in any soil, but you should avoid extremely dry soil.
