Asiatic Dayflower (Commelina communis)

Asiatic Dayflower

Commelina communis

Its blue blooms last only a day, a fleeting splash of sky. Annual herbaceous flowering plant; common name: Asiatic Dayflower.

Partial sun
2–3/week
Beginner
🌱

Plant Needs

☀️
Sunlight Thrives in partial shade to full sun; provide dappled shade during intense midday summer sunlight to prevent leaf scorch
💧
Watering Keep soil consistently moist but not waterlogged; avoid allowing the root zone to dry out completely
🌡️
Temperature Prefers temperate to warm growing conditions; cannot tolerate frost, so bring container plants indoors before winter in cold regions
🔍

Characteristics

  • Leaf: Linear-lanceolate, bright green, smooth margins, arranged alternately on slender stems
  • Flower: Two large vivid blue petals and one small white petal; blooms open in morning and wilt by mid-afternoon
  • Stem: Slender, succulent, branching, may root at nodes when in contact with moist soil
🛠️

Care Guide

Watering

Keep soil evenly moist; water when the top 1 cm of soil feels dry

Fertilization

Diluted balanced liquid feed every 2 weeks. Avoid over-fertilizing to prevent excessive foliage growth at the expense of flowering

Banana peel tea:Chop 2-3 banana peels and soak in 1 liter of water for 3 days; dilute the tea 1:10 with water before applying as a root drench; discard solid peels to avoid pest issues
Pruning
  • Remove spent blooms promptly to encourage continuous flowering throughout the growing season
  • Trim overgrown or leggy stems to maintain a compact, tidy growth habit
  • Pull up dead plant material at the end of the growing season to reduce overwintering pest and disease risk
⚠️

Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic to cats; no reported adverse effects

Humans: No known toxic effects to humans; young leaves are edible in small quantities

📖

Garden Uses & Culture

Culture: N/A

Usage: Ornamental ground cover; young leaves are edible in some East Asian cuisines