I’ve tried to get Moonflower vines to bloom in past years, and haven’t had much luck because of our cool coastal summer weather. The fragrant flowers are huge and are supposed to bloom at night, but they need heat. This year, I started the seeds early in a big pot on the patio in full sun (next to the dryer vent). That must have provided the extra warmth needed, because it’s blooming like crazy (even at noon).