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Information @ a Glance


  • Periwinkle is native to Madagascar.
  • Periwinkle is a garden plant that escapes from cultivation.
  • Periwinkle is a desaturated color in the blue/indigo/violet family.
  • Periwinkle is also called lavender blue.
  • It may be considered a pastel indigo.
  • Periwinkle blue is the color for stomach cancer awareness ribbons.
  • There are two classes of active compounds in lesser periwinkle—alkaloids and tannins.


  • Madagascar periwinkle may be grown as a tender perennial in California and Florida or cultivated as an annual elsewhere.
  • Madagascar periwinkle does best in poor, well-drained soils.
  • Madagascar periwinkle should be watered moderately during the growing season, but it is relatively drought resistant once established.
  • Madagascar periwinkle is usually grown from seed, but also can be rooted from cuttings taken in spring or summer.


  • Madagascar periwinkle contains a virtual cornucopia of toxic and useful alkaloids.
  • Extracts from Madagascar periwinkle have been shown to be effective in the treatment of various kinds of leukemia, skin cancer, lymph cancer, breast cancer and Hodgkin's disease.
  • Rosy Periwinkle has been used to treat high blood sugar in diabetics, and many cultures still drink teas made out of the plant for this purpose. 


  • Periwinkles (Tympanotonus spp.) and oyster (Crassostrea spp.) represent one of the most important shellfish’s resources of the world.

  • Most of the periwinkles harvested go directly to the Boston market and are distributed from there to markets across the United States and in Europe and Asia.
  • The quality of periwinkles is much more consistent than for the sea urchins but beach prices are still largely influenced by market forces

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