cardiac glycosides, indole alkaloids
Flower Color:
  • flower color
  • flower color
  • flower color
meadows, woodlands, gardens

Time of Greatest Risk


Geographical Distribution

Periwinkle distribution - United States

Related Species


Vinca spp

Blue Periwinkle, Creeping Myrtle, Common Periwinkle
8/ 10
Periwinkle (Vinca spp) are evergreen to semi-evergreen vines with violet, pink or white pinwheel-shaped flowers. Vinca spp are commonly grown as groundcover in temperate gardens for their evergreen foliage, bright colorful flowers, ease of culture, and dense habitat that smothers most weeds. Periwinkle flowers March to May, and sporadically May to September. Slender, cylindrical fruit appears May to July.

Toxic components
Periwinkle contains more than 50 alkaloids which are used in modern day medicine to treat diabetes, high blood pressure and have been used as disinfectants.