Mix mirabilis contains red, pink, purple, yellow, white and bicolored flowers.
Showy four o'clocks are perennial plants that die back to their roots each year. These plants form large clumps from multiple stems, are 1-3 feet tall and as broad or broader. The dark green leaves are opposite and are round to egg-shaped -- at times they appear heart-shaped -- with short petioles. The leaves and stems may be either smooth or have sticky hairs. The leaves vary from 3/4-7 inches long and are often pointed at the tip. They are extremly fragrant.
Sow seeds directly into the garden just before the last frost in your area. Cover seeds with 1/4" of soil. Space plants 12 inches apart and thin to two feet apart. Four O'Clock prefer full sun, but will tolerate partial shade. Note that in partial shade they may grow lanky. They will do well in rich, well composted soil as they are big eaters. Keep soil moist. Add a general purpose fertilizer once or twice a month to encourage vigorous growth.