Seed can be started earlier indoors in individual peat pots 4-6 weeks before last expected frost. Allow 12 inches between thinned or individually potted seedlings for transplant. One to two weeks depending upon weather and soil conditions. Keep soil moderately moist during germination. Ed's Special Advice Four O'Clocks are heat resistant and tolerant of poor soil.
Plants can often reseed themselves or grow back from their tuberous roots.
For ideal conditions, select a sunny location in somewhat fertile well drained soil and water when dry in the summer. Blooms mid summer to fall, sometimes in different shades of color on the same plant.