Venturing into the world of the Marantaceae family is like finding an author whose books you really enjoy reading and, happy day, is really prolific. Commonly referred to as prayer plants because of the leaves' tendencies to fold upward at night, marantas, calatheas, stromanthes and ctenanthes (pronounced TEE-nanthes) are all related with similar traits from one species to the other, and with what seems like dozens of varieties within each species. The Never Never Plant (no idea why it's called that, even after searching the internet), or Ctenanthe 'Grey Star' can grow to three feet tall and about as wide in 10 years' time, producing deeply veined gray leaves (like calatheas) with wine red undersides (like stromanthes). As is true to the genus, this tropical houseplant likes high humidity, well-lit environments, handles underwatering better than soggy roots, and is considered pet-friendly. Periodic misting keeps the foliage looking its best, so Grey Star may thrive in a well-lit bathroom.