PINK PERIWINKLE is considered a weed by Australian authorities and eradication guidelines are readily available.  In reality, it’s just as much a new migrant as the invasive “white man” and holds high medicinal value.  The juice of fresh leaves displays antidiabetic activity by reducing blood glucose [1], the flower extract has wound-healing activity [2] & it’s vinca alkaloids (obtained via acid-base extraction) are used in cancer treatment [3] .  For these reasons, it is considered a high value plant within the pharmaceutical industry.  Next time you walk past it in your garden, give it a ‘wink’ or better yet – “thank you”.  And remember where it’s growing in case you need to use it’s medicinal gifts….not just another pretty flower at all!



  1. Nammi, S., et al., The juice of fresh leaves of Catharanthus roseus Linn. reduces blood glucose in normal and alloxan diabetic rabbits. BMC complementary and Alternative Medicine, 2003. 3(1): p. 4.
  2. Nayak, B. and L.M.P. Pereira, Catharanthus roseus flower extract has wound-healing activity in Sprague Dawley rats. BMC Complementary and Alternative Medicine, 2006. 6(1): p. 41.
  3. Roepke, J., et al., Vinca drug components accumulate exclusively in leaf exudates of Madagascar periwinkle. Proceedings of the National Academy of Sciences, 2010. 107(34): p. 15287-15292.

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Chrissy-Tiina Laurikainen

In person + online permaculture teacher. Online permaculture consultant. Upkeep of a 30 acre rural property (using permaculture & other agroecological techniques). A communal research laboratory focusing on free innovation in the works. Doing what I can to support LIFE on planet Earth!!

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