Vinca (/ˈvɪŋkə/; Latin: vincire “to bind, fetter”) is an Old World genus of flowering plants in the family Apocynaceae, The English name periwinkle is shared with the related genus Catharanthus (and with the mollusc Littorina littorea). Some Vinca species are cultivated but have also spread invasively. Additionally, some species have medicinal uses. The most spread species is Vinca minor. Vinca plants are subshrubs or herbaceous, and have slender trailing stems 1–2 m (3+1⁄2–6+1⁄2 ft) long but not growing…