Perennial White Mirabilis Jalapa (Four O'clock) Self-seed Flower 100 Seeds Plant Mature Height: 24 - 32" Light Requirement: full Sun Plant perennializes in warm, coastal environments Regrowing in the following spring from the tuberous roots Flowers then produce a strong, sweet-smelling fragrance throughout the night, then close for good in the morning. New flowers open the following day.