Oenothera biennis aka Common Evening Primrose

Oenothera biennis, also known as the common evening-primrose, is a biennial species of flowering plant in the family Onagraceae. It is native to eastern and central North America, but has been widely naturalized in temperate and subtropical regions around the world. Other common names for the plant include evening star, sundrop, weedy evening primrose, German rampion, hog weed, King's cure-all, and fever-plant. The plant can grow to be 30-150 cm tall and has lanceolate leaves that are produced in a tight rosette in the first year and spirally on a stem in the second year. Blooming lasts from late spring to late summer, and the hermaphroditic flowers are produced on a tall spike. The flowers, which are yellow and have four bilobed petals, only last until the following noon. The plant gets its name from the fact that the blooms open visibly fast every evening, producing an interesting spectacle. Evening primrose oil is produced from the plant, which has a bright nectar guide pattern that is apparent under ultraviolet light and visible to its pollinators, moths, butterflies, and bees. However, the plant can be invasive in eastern and central North America. Common Evening-Primrose is a super rare houseplant that is relatively easy to grow. It needs regular watering and does best in long-lasting, direct light that is less than 1 foot from a window. The plant prefers well-draining soil and doesn't need added fertilizers if you repot it each time it doubles in size. The plant belongs to the Oenothera genus and is native to Canada and the United States.