In the field of medicine, many life-saving drugs have been developed from plants. In this category, few have been as successfully employed as the rosy periwinkle, Cathanthus roseus. Native to the ...

In March periwinkle flowers bloom in pink and white in the Mekong Delta province of An Giang, home to Tra Su Mangrove Forest and famous Ba Chua Xu Lady Temple. Fields of periwinkle blossoms next to ...

A campaign by the Hong Kong government to promote love of nature among children of kindergarten age has run into criticism, after it emerged that the youngsters were being asked to raise a pretty but ...