The term âhalf and halfâ shows up very frequently in cooking and baking recipes in the US, but it is not particularly well known outside of the US (or the term refers to something completely different). When it appears in a recipe, it sometimes generates a little confusion as to what it is.
Note that the purple passion vine (Gynura aurantiaca) is unrelated to the Passiflora species and is considered nontoxic to dogs, according to the American Society for the Prevention of Cruelty to Animals. Purple passion grows in USDA zones 10 through 12. 1  Dig This.
How did the passion flower get its name? When the first Christian missionaries landed in South America in the sixteenth century, they found a plant which seemed to be a very good omen for the success of their mission. They called it the passion flower because they thought that it symbolised the death of Christ.