Of European origin, it is a genus of 7 species of herbaceous and suffruticose plants, perennials, of small size. The most common are V. minor and Vinca major, creeping perennials, also used in rock gardens. These are evergreen perennials. They are widespread throughout Europe, especially in the undergrowth, in shady areas, where they expand facilitated by the creeping habit. In their natural environment they can form large flowery cushions. Usually they keep the leaves even during the winter. These grow along the entire stem, opposite, have an oval shape and a dark green color (in nature). They naturally widen by offshoot. The stems, in fact, emit roots with extreme ease. The most widespread species in nature are Vinca major and Vinca minor. They are very similar. They differ only in the size of the leaves and flowers. Both can be found in cultivation. Vinca difformis, very common in southern Italy, and Vinca herbacea, rare in our country, common in Eastern Europe, can also be found spontaneously. In this case it is an annual species. We will deal in particular with the first two, which are easier to find on the market and therefore widespread in our gardens.
they are tubular with 5 elongated and rounded lobes, generally purple-blue, the so-called periwinkle color, white-flowered cultivars exist.