My mother had one of these Purple Passion Plants (aka Purple Velvet Plant) in an entryway of our house back in the '70s. It started out on a shelf next to an 8 x 4 picture window and promptly settled in and happily began to grow. It was planted into a window sill 'window box' ... ie, a long pot about 8-inches wide and about 30 to 36-inches long. Being a vine, it soon began to wander along the long shelf ... from one end to the other, the full 8-foot length.

Never heard of or saw one grow so well until that one, but it flourished in the northern window. It put out multiple vines ... some hung down from the shelf, the rest ran along the length of it. When it got to the end of the entryway ... it kept going. My mother was amused, and trained it up over the doorway and down to the opposite side of the entryway where... you guessed it: there was a second 8 x 4-foot picture window and a matching shelf.

Both windows and shelves were filled with other houseplants and the Purple Passion Plant only had the one long pot... but it kept growing. It finally reached almost to the end of the opposite wall's shelf and 8-ft picture window. It was massive! We measured the longest vine and it was over 20-feet in length (running along the first window, across the end of the room and over the door, then back up the third wall of the room). Incredible. And then it flowered ... vivid orange trumpet-shaped blooms along the entire length of that massive vine. The contrast between the bright purple and vivid orange was intense, and mother had that Purple Passion Plant for nearly 10 years... until my parents sold the house and moved. It was too large to take with her, but she took slips from it to start more.

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The flowers to me smell musty or mildewy. Not pleasant! The plants are quite beautiful though.

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