Flower-of-an-hour (Hibiscus trionum)
Care, watering, light and tips for Flower-of-an-hour on Floravia.
Quick facts
- Family: Malvaceae
- Difficulty: Easy to care for
- Watering: every 3 days
- Light: Partial shade
- Temperature: 10–30 °C
- Toxicity: Toxic to pets
About Flower-of-an-hour
Hibiscus trionum, commonly known as flower-of-an-hour or Venice mallow, is an annual plant in the Malvaceae family, notable for its delicate pale cream flowers with a striking dark purple center. Its ephemeral blooms open in the morning and close in the afternoon, offering a daily display of beauty. It's ideal for pots, garden borders, or as part of a wildflower meadow, adding a touch of rustic charm.
Native range
Africa and parts of Asia, including the Mediterranean and the Middle East.
Care tips
It thrives in full sun for abundant flowering, though it can tolerate some partial shade in very hot climates. Regular watering is essential to keep the soil consistently moist but not waterlogged, especially during blooming. Use a well-draining soil rich in organic matter. Avoid over-fertilizing, as it can promote foliage growth at the expense of flowers.
How to save a dying Flower-of-an-hour
- Warning signs
- Yellowing or rapidly wilting leaves, flower buds that fail to open and drop, stunted growth.
- First aid
- Check drainage and soil moisture. Ensure full sun and good air circulation. Remove spent flowers.
- What kills it
- Overwatering or waterlogging that causes root rot. Also, insufficient direct sunlight.
- Can it be saved?
- Yes, if you act quickly. It's resilient but needs a consistent, suitable environment.