Water
Water consistently during the growing season, allowing the soil to dry slightly between waterings. Reduce watering significantly in winter when the plant is dormant.
Overwatering can lead to root rot, so ensure good drainage.
Also known as Hairy Four-O'clock · Hairy Umbrellawort · Mountain Four-O'clock
Mirabilis albida (White Four O'clock) is a perennial herb native to North America, featuring fragrant, white, trumpet-shaped flowers that open in the late afternoon.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
75% intensity
Prefers at least 6 hours of direct sunlight daily for best flowering.
Moderate
50% intensity
Allow soil to dry slightly between waterings; reduce in winter.
Well-drained
50% intensity
Warm
75% intensity
Thrives in temperatures between 18-27°C; protect from frost.
Moderate
50% intensity
Feed with balanced liquid fertilizer during the growing season.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water consistently during the growing season, allowing the soil to dry slightly between waterings. Reduce watering significantly in winter when the plant is dormant.
Overwatering can lead to root rot, so ensure good drainage.
Prune back in late winter or early spring to shape the plant and remove any dead or damaged stems. Deadheading spent flowers can encourage more blooms and prevent self-seeding. This helps maintain a tidy appearance.
Propagate from seeds sown in spring after the last frost or indoors a few weeks prior. Division of established clumps in spring is also an effective method. Cuttings can be taken from softwood in summer.
Repot young plants annually or as needed into slightly larger containers. Mature plants can be repotted every 2-3 years. Use a well-draining potting mix. Repotting is best done in early spring before new growth begins.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of White Four O'clock (Mirabilis albida)
Where White Four O'clock (Mirabilis albida) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Caryophyllales |
| Family | Nyctaginaceae |
| Genus | Mirabilis |
| Species | Mirabilis albida |
Similar in genus Mirabilis
Answers based on plant encyclopedia data
