When Hobart gardener Sally Catherall bought passionfruit vines for her garden, she didn't think she'd be pulling out roots over a decade later. Her vine used blue passionflower (Passiflora caerulea) ...

Q Two years ago I planted a passion flower (Passiflora caerulea). This year I had lots of flowers and fruits, which ripened to a plum shape and were bright orange. Are these fruits edible? A Yes, but ...

This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...