Vinca Flower Description. Impatiens 1499 Add to cart. Periwinkle in botany any of various plants of the genus Vinca of the dogbane family Apocynaceae.
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The stems are smooth green round sometimes pubescent and often hollow although it does produce woody rhizomes. The best preventive measures are to avoid overwatering and provide good drainage. Impatiens 1499 Add to cart.
Annual vinca is invincible to most pests but it can succumb to stem and root rot caused by Phytophthora a soil- and water-borne fungal-like microorganism.
The calyx is green tube slender lobes subulate. One or more flowers are produced at the stem tips throughout a flowering period that generally lasts from mid-spring to early autumn. Flower colour is usually soft rose-pink or occasionally mauve. The genus Catharanthus is closely related to the genus Vinca and the species C.
