Four O'clocks Flowers Seeds (Mirabilis Jalapa Pink) 100 Seeds. Perennial 100 Four O'Clocks Flowers Seeds (Mirabilis Jalapa Pink) Perennial Four O'Clock (Mirabilis Jalapa PINK) - 100 SEEDS Four O'Clock (Mirabilis Jalapa Pink) - The hummingbirds will love your garden when you grow these fragrant flowers from Four O'Clock seed! Mirabilis Jalapa Four O'Clock perennials are an old-fashioned favorite with a bright trumpet shaped flower that is very distinctive. Four O'Clock plants got their name because they open in mid-afternoon. Its blooms will remain open overnight, and close in early morning. Generally, the flowers will remain open on cloudy days as well. Four O' Clock flowers have a very nice, pleasant fragrance which can be quite strong at times. Native to tropical areas of North and South America they prefer warm climates. Four O'Clocks are actually perennials, but are grown as annuals in most of the heavy frost areas of the U.S. The bushy plants make an attractive hedge or border. Because the flowers are open during the evening, we recommend you place them in areas where people will see them in early evening hours to get the most out of this Mirabilis Jalapa.