Moonflowers are nocturnal bloomers, perfect for night owls and late night strollers. After sunset, these huge white flowers bloom and glow all night in the moonlight. Then, as the sun rises, they close their fragrant blooms. At Home Farm Herbery we enjoy it's evening performance as well as heavy fragrance. The flowers unfold very quickly and that in itself is an event worth waiting for! Annual, Blooms Summer to Fall. 10' - 20' vine, prefers Full Sun. Sow outside in spring after last frost or early summer. Sow inside: 6 to 8 weeks before planting outside. Sow ½ inch deep and 1 inch apart and germinations in 10 to 20 days.