I grow four O'clock flowers and look forward to them blooming because they attract hummingbirds and also because of their fragrance. I planted the magenta color close to my patio and the bi-color yellow grows close to the garden path. I have also planted yellow mixed with the magnet in a large pot and set it on my patio.
Photographs of my four O'clock flower gardens:
Grow Four O’clocks in full sun to part shade to shade in the afternoon when the sun is the hottest. If your summers are extremely hot (95 to 105 F) then the four O’clock will benefit from part shade in the peak heat of the day. Plant in well-drained soil, okay to grow in poor soil. The plant will flourish if you amend the soil with compost or manure. Space plants two feet apart. Keep the soil evenly moist until the plant fills out and gets a bushy appearance. Then water as needed. I generally water every morning with a soaking hose. The slow drip at the soil line is a good way to provide roots with hydration.
Four O'clocks are perennials in zones 8 to 11. They may be grown as an annual in other growing regions.
Collect seeds in the fall and keep them in a labeled envelope. Use these seeds for spring planting. Caution: do not eat the seeds; they are poisonous.