Desert four o'clock (Mirabilis aggregata)
Care, watering, light and tips for Desert four o'clock on Floravia.
Quick facts
- Family: Nyctaginaceae
- Difficulty: Easy to care for
- Watering: every 3 days
- Light: Partial shade
- Temperature: 10–30 °C
- Toxicity: Toxic to pets
About Desert four o'clock
Mirabilis aggregata, commonly known as Four O'Clock, is a perennial plant from the Nyctaginaceae family, valued for its showy, tubular flowers that open in the late afternoon and remain open through the night. Its often vibrantly colored flowers, such as pink, red, yellow, or white, emit a sweet fragrance that attracts nocturnal pollinators, and its dense, bushy foliage makes it ideal for borders, flower beds, or as an accent plant in warm-climate gardens.
Native range
Southwestern United States and northern Mexico
Care tips
Mirabilis aggregata thrives in full sun to partial shade, requiring at least 6 hours of direct sunlight for abundant flowering. It prefers well-drained, sandy or loamy soil with a neutral to slightly alkaline pH; good drainage is crucial to prevent root rot. Water regularly during dry periods, allowing the top layer of the soil to dry out between waterings, but avoid waterlogging. A common mistake is planting it in heavy, poorly draining soils, which can lead to disease issues.
How to save a dying Desert four o'clock
- Warning signs
- Wilting or yellowing leaves, soft stems, no blooming.
- First aid
- Check drainage and soil moisture. If very dry, water deeply. If waterlogged, repot into dry soil.
- What kills it
- Overwatering that rots roots or lack of direct sunlight. They are sun-lovers.
- Can it be saved?
- Yes, if roots aren't fully rotten. Act quickly to adjust watering and light.