The Q&A Archives: Catharanthus roseus

Question: I am growing catharanthus roseus (periwinkle) in window boxes that receive full southern exposure and even in the unusual heat and humidity we are experiencing this summer, they are doing very well. I am wondering if these plants would do well in a container that receives mostly bright shade during the day with the exception of early morning and late afternoon sunshine. I currently have impatiens in this location and would like a change.

Answer: Catharanthus roseus, Madagascar periwinkle, will grow in full sun or partial shade, but flowers best in hot sunshine. If you like the leaf shape and color, and don't mind losing some of the bloom, go ahead and plant it in your shady area.

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