Mirabilis Jalapa. Four-O’Clocks, or Common Marvel of Peru, are treated as annuals in most areas of the United States but they can be grown as perennials in tropical America. The plants grow to a height of three feet and fresh blossoms open in the afternoon, hence the name Four-O’Clock. The dark pink flowers are trumpet shaped, about one inch in diameter and one to two inches deep.
Sow seeds in a sunny location where plants are to grow. The seed will germinate in 10 to 15 days. Four-O’Clocks were grown in tropical America in 1596.
Heirloom seeds are collected from the gardens and grounds of George Washington's Mount Vernon and cleaned and packaged by hand.