Ipomoea alba aka Moon Flower

Ipomoea alba, also known as moonflower or tropical white morning-glory, is a night-blooming morning glory native to tropical and subtropical regions of North and South America, from Argentina to northern Mexico, Arizona, Florida, and the West Indies. It was formerly classified as genus Calonyction, species aculeatum, but is now properly assigned to genus Ipomoea, subgenus Quamoclit, section Calonyction. This fragrant, tender perennial vine grows up to 70 feet in tropical climates but typically reaches 10-15 feet in a single season as an annual. It is widely cultivated as an ornamental plant for its deep green foliage and attractive spiraled tubular flower buds that bloom at dusk from mid-summer into fall. The flowers, which can reach up to 6 inches in diameter, attract night-flying moths and remain open all night before closing before noon the following day. This plant is synonymous with and formerly known as Ipomoea bona-nox and Calonyction aculeatum. As a houseplant, tropical white morning glory needs regular watering and does best in long-lasting, direct light less than 1 foot from a window.