Catharanthus roseus


(Pink Periwinkle)




Catharanthus roseus

Common name(s)

Pink Periwinkle

Main colour(s)

Pink or White




Orpheus Island Research Station


The Madagascan Periwinkle is an evergreen shrub or herbaceous plant that grows up to 1 m tall in open grass areas. The leaves are elliptical in shape, 2.5–9 cm long and 1–3.5 cm broad, glossy green, hairless, with a pale midrib and a short petiole 1–1.8 cm long arranged in opposite pairs. The flowers are white to dark pink with a darker red centre, with a basal tube 2.5-3 cm long and a corolla 2–5 cm diameter with five petal-like lobes. The fruit is a pair of follicles 2–4 cm long and 3 mm broad.

Interesting Facts

While it is a commonly cultivated plant overseas and within some areas of Australia it is considered a noxious weed in WA and ACT.

Sites where this species can be found at OIRS

This plant is considered a noxious weed on OIRS and is one of the species included in our weed removal program. It can commonly be found growing wild along the edges and within the first metre of the tree line within the station lease hold.

Research that has been undertaken at OIRS


2010: Approximately 50kg removed offsite by OIRS volunteers

2011: Approximately 120kg removed offsite by OIRS volunteers

2012: Approximately 150kg removed offsite by OIRS volunteers